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  Plantae
    Tracheophyta
           [Tracheobionta]
    Spermatophyta
      Magnoliophyta
             [Angiospermae]
         Eudicots
             Core Eudicots
               Rosids
               Fabids
                    Fagales
                            <b>Fagaceae</b>
                                     <i>Castanea</i>
                                             <i>Castanea alabamensis</i>
                                             <i>Castanea alnifolia</i>
                                               <i>Castanea alnifolia var. alnifolia</i>
                                               <i>Castanea alnifolia var. floridana</i>
                                             <i>Castanea ashei</i>
                                             <i>Castanea bungeana</i>
                                             <i>Castanea crenata</i>
                                                   [Castanea sativa var. pubinervis]
                                                   [Castanea vulgaris var. japonica]
                                             <i>Castanea dentata</i>
                                                   [Castanea americana]
                                                   [Castanea sativa var. americana]
                                                   [Castanea vulgaris var. americana]
                                             <i>Castanea dentata x Castanea mollissima</i>
                                             <i>Castanea floridana</i>
                                             <i>Castanea formosana</i>
                                             <i>Castanea henryi</i>
                                             <i>Castanea japonica</i>
                                             <i>Castanea mollissima</i>
                                             <i>Castanea neglecta</i>
                                             <i>Castanea ozarkensis</i>
                                                   [Castanea arkansana]
                                                   [Castanea pumila subsp. ozarkensis]
                                               <i>Castanea ozarkensis var. arkansana</i>
                                             <i>Castanea pubinervis</i>
                                             <i>Castanea pumila</i>
                                                   [Castanea margaretta var. arcuata]
                                                   [Castanea margaretta]
                                                   [Castanea nana]
                                                   [Castanea pumila subsp. ashei]
                                                   [Castanea pumila var. margaretta]
                                               <i>Castanea pumila subsp. pumila</i>
                                               <i>Castanea pumila var. ashei</i>
                                               <i>Castanea pumila var. margarettiae</i>
                                               <i>Castanea pumila var. ozarkensis</i>
                                               <i>Castanea pumila var. pumila</i>
                                             <i>Castanea sativa</i>
                                             <i>Castanea seguinii</i>
                                             <i>Castanea stricta</i>
                                             <i>Castanea vesca</i>
                                             <i>Castanea vulgaris</i>
                                             <i>Castanea x neglecta</i>
                                     <i>Castanopsis</i>
                                             <i>Castanopsis acuminatissima</i>
                                             <i>Castanopsis annamensis</i>
                                             <i>Castanopsis argentea</i>
                                             <i>Castanopsis armata</i>
                                             <i>Castanopsis brevispinula</i>
                                             <i>Castanopsis carlesii</i>
                                                   [Castanopsis cuspidata var. carlesii]
                                             <i>Castanopsis ceratacantha</i>
                                             <i>Castanopsis chinensis</i>
                                             <i>Castanopsis chrysophylla</i>
                                               <i>Castanopsis chrysophylla var. minor</i>
                                             <i>Castanopsis concinna</i>
                                             <i>Castanopsis cuspidata</i>
                                                   [Quercus cuspidata]
                                             <i>Castanopsis delavayi</i>
                                             <i>Castanopsis diversifolia</i>
                                             <i>Castanopsis echinocarpa</i>
                                             <i>Castanopsis evansii</i>
                                                   [Castanopsis elmeri]
                                             <i>Castanopsis eyrei</i>
                                                   [Castanopsis caudata]
                                             <i>Castanopsis faberi</i>
                                                   [Castanopsis kusanoi]
                                                   [Castanopsis stellatospina]
                                             <i>Castanopsis fargesii</i>
                                             <i>Castanopsis fissa</i>
                                             <i>Castanopsis formosana</i>
                                             <i>Castanopsis hainanensis</i>
                                             <i>Castanopsis hypophoenicea</i>
                                                   [Castanopsis disperispina]
                                             <i>Castanopsis hystrix</i>
                                             <i>Castanopsis indica</i>
                                             <i>Castanopsis inermis</i>
                                                   [Castanopsis sumatrana]
                                                   [Quercus glomerata]
                                             <i>Castanopsis javanica</i>
                                                   [Castanea javanica]
                                             <i>Castanopsis jucunda</i>
                                             <i>Castanopsis kawakamii</i>
                                             <i>Castanopsis lanceifolia</i>
                                             <i>Castanopsis mekongensis</i>
                                             <i>Castanopsis nhatrangensis</i>
                                             <i>Castanopsis pierrei</i>
                                             <i>Castanopsis psilophylla</i>
                                             <i>Castanopsis sclerophylla</i>
                                                   [Lithocarpus chinensis]
                                             <i>Castanopsis sempervirens</i>
                                             <i>Castanopsis sieboldii</i>
                                                   [Castanopsis cuspidata var. sieboldii]
                                             <i>Castanopsis subacuminata</i>
                                             <i>Castanopsis tibetana</i>
                                             <i>Castanopsis tonkinensis</i>
                                             <i>Castanopsis tribuloides</i>
                                             <i>Castanopsis tungurrut</i>
                                     <i>Chrysolepis</i>
                                             <i>Chrysolepis chrysophylla</i>
                                               <i>Chrysolepis chrysophylla chrysophylla</i>
                                               <i>Chrysolepis chrysophylla var. chrysophylla</i>
                                               <i>Chrysolepis chrysophylla var. minor</i>
                                             <i>Chrysolepis sempervirens</i>
                                                   [Castanopsis chrysophylla var. sempervirens]
                                     <i>Colombobalanus</i>
                                     <i>Cyclobalanopsis</i>
                                     <i>Fagus</i>
                                             <i>Fagus castanea</i>
                                             <i>Fagus chienii</i>
                                             <i>Fagus crenata</i>
                                             <i>Fagus engleriana</i>
                                             <i>Fagus grandifolia</i>
                                                   [Fagus americana]
                                                   [Fagus ferruginea]
                                                   [Fagus grandifolia subsp. grandifolia]
                                                   [Fagus grandifolia subsp. heterophylla]
                                                   [Fagus grandifolia var. caroliniana]
                                                   [Fagus grandifolia var. grandifolia]
                                                   [Fagus virginiana]
                                               <i>Fagus grandifolia subsp. mexicana</i>
                                                     [Fagus grandifolia var. mexicana]
                                             <i>Fagus japonica</i>
                                             <i>Fagus lucida</i>
                                             <i>Fagus mexicana</i>
                                             <i>Fagus nana</i>
                                             <i>Fagus orientalis</i>
                                                   [Fagus sylvatica subsp. orientalis]
                                             <i>Fagus pumila</i>
                                             <i>Fagus sieboldii</i>
                                             <i>Fagus sinensis</i>
                                                   [Fagus longipetiolata]
                                             <i>Fagus sylvatica</i>
                                                   [Fagus sylvatica var. cristata]
                                                   [Fagus sylvatica var. laciniata]
                                                   [Fagus sylvatica var. pendula]
                                                   [Fagus sylvatica var. purpurea]
                                               <i>Fagus sylvatica var. atropunicea</i>
                                               <i>Fagus japonica var. multinervis</i>
                                                     [Fagus multinervis]
                                     <i>Lithocarpus</i>
                                           [Limlia]
                                             <i>Lithocarpus amygdalifolius</i>
                                                   [Quercus amygdalifolia]
                                             <i>Lithocarpus apoensis</i>
                                                   [Quercus apoensis]
                                             <i>Lithocarpus bancanus</i>
                                             <i>Lithocarpus bennettii</i>
                                                   [Quercus bennettii]
                                             <i>Lithocarpus brevicaudatus</i>
                                                   [Pasania brevicaudata]
                                             <i>Lithocarpus cambodiensis</i>
                                             <i>Lithocarpus castellarnauianus</i>
                                                   [Quercus pinatubensis]
                                             <i>Lithocarpus caudatifolius</i>
                                                   [Quercus minahassae]
                                             <i>Lithocarpus celebicus</i>
                                                   [Quercus celebica]
                                             <i>Lithocarpus chrysocomus</i>
                                             <i>Lithocarpus cleistocarpa</i>
                                             <i>Lithocarpus cleistocarpus</i>
                                             <i>Lithocarpus clementianus</i>
                                             <i>Lithocarpus coopertus</i>
                                                   [Quercus reflexa]
                                             <i>Lithocarpus corneus</i>
                                                   [Pasania cornea]
                                                   [Quercus cornea]
                                               <i>Lithocarpus corneus var. corneus</i>
                                                     [Pasania kodaihoensis]
                                                     [Quercus kodaihoensis]
                                             <i>Lithocarpus daphnoideus</i>
                                             <i>Lithocarpus dasystachyus</i>
                                                   [Quercus dasystachya]
                                             <i>Lithocarpus dealbatus</i>
                                                   [Pasania dealbata]
                                             <i>Lithocarpus densiflora</i>
                                               <i>Lithocarpus densiflora var. densiflora</i>
                                               <i>Lithocarpus densiflora var. echinoides</i>
                                             <i>Lithocarpus densiflorus</i>
                                               <i>Lithocarpus densiflorus densiflorus</i>
                                               <i>Lithocarpus densiflorus var. densiflorus</i>
                                               <i>Lithocarpus densiflorus var. echinoides</i>
                                             <i>Lithocarpus echinifer</i>
                                                   [Quercus echinifera]
                                             <i>Lithocarpus edulis</i>
                                             <i>Lithocarpus elegans</i>
                                                   [Lithocarpus finetii]
                                                   [Lithocarpus grandifolius]
                                                   [Lithocarpus spicatus]
                                                   [Quercus anceps]
                                             <i>Lithocarpus fenestratus</i>
                                                   [Quercus fenestrata]
                                             <i>Lithocarpus fenzelianus</i>
                                             <i>Lithocarpus formosanus</i>
                                                   [Pasania formosana]
                                             <i>Lithocarpus glaber</i>
                                                   [Pasania glabra]
                                             <i>Lithocarpus glutinosus</i>
                                                   [Quercus zschokkei]
                                             <i>Lithocarpus gracilis</i>
                                             <i>Lithocarpus hancei</i>
                                                   [Lithocarpus arisanensis]
                                                   [Lithocarpus ternaticupulus]
                                                   [Pasania hancei var. arisanensis]
                                                   [Pasania hancei]
                                                   [Pasania ternaticupula]
                                             <i>Lithocarpus harlandii</i>
                                                   [Pasania chiaratuangensis]
                                                   [Pasania harlandii]
                                             <i>Lithocarpus havilandii</i>
                                             <i>Lithocarpus henryi</i>
                                             <i>Lithocarpus honbaensis</i>
                                             <i>Lithocarpus hypoglaucus</i>
                                             <i>Lithocarpus jordanae</i>
                                             <i>Lithocarpus kawakamii</i>
                                                   [Pasania kawakamii]
                                             <i>Lithocarpus konishii</i>
                                             <i>Lithocarpus kozlovii</i>
                                             <i>Lithocarpus kunstleri</i>
                                             <i>Lithocarpus leptogyne</i>
                                             <i>Lithocarpus lindleyanus</i>
                                             <i>Lithocarpus litseifolius</i>
                                                   [Pasania synbalanos]
                                             <i>Lithocarpus longipedicellatus</i>
                                             <i>Lithocarpus luzoniensis</i>
                                             <i>Lithocarpus megacarpus</i>
                                             <i>Lithocarpus mindanaensis</i>
                                                   [Quercus mindanaensis]
                                             <i>Lithocarpus naiadarum</i>
                                             <i>Lithocarpus nantoensis</i>
                                                   [Pasania nantoensis]
                                             <i>Lithocarpus pachyphyllus</i>
                                             <i>Lithocarpus pallidus</i>
                                                   [Quercus pallida]
                                             <i>Lithocarpus philippinensis</i>
                                                   [Quercus philippinensis]
                                             <i>Lithocarpus polystachyus</i>
                                                   [Quercus polystachya]
                                             <i>Lithocarpus pseudomoluccus</i>
                                                   [Quercus pseudomolucca]
                                             <i>Lithocarpus shinsuiensis</i>
                                             <i>Lithocarpus solerianus</i>
                                                   [Quercus soleriana]
                                             <i>Lithocarpus sootepensis</i>
                                             <i>Lithocarpus submonticola</i>
                                                   [Quercus submonticola]
                                             <i>Lithocarpus sulitii</i>
                                             <i>Lithocarpus sundaicus</i>
                                                   [Quercus lamponga]
                                             <i>Lithocarpus turbinatus</i>
                                             <i>Lithocarpus uraianus</i>
                                                   [Castanopsis uraiana]
                                                   [Limlia uraiana]
                                             <i>Lithocarpus urceolaris</i>
                                             <i>Lithocarpus uvariifolius</i>
                                             <i>Lithocarpus variolosus</i>
                                             <i>Lithocarpus woodii</i>
                                             <i>Lithocarpus xylocarpus</i>
                                     <i>Notholithocarpus</i>
                                             <i>Notholithocarpus densiflorus</i>
                                                   [Pasania densiflora]
                                                   [Quercus densiflora var. hartwegii]
                                                   [Quercus densiflora]
                                               <i>Notholithocarpus densiflorus var. densiflorus</i>
                                                     [Lithocarpus densiflorus var. montanus]
                                                     [Lithocarpus densiflorus var. parvus]
                                                     [Pasania densiflora f. lanceolata]
                                               <i>Notholithocarpus densiflorus var. echinoides</i>
                                     <i>Pasania</i>
                                             <i>Pasania edulis</i>
                                     <i>Quercus</i>
                                             <i>Quercus X knoblochii</i>
                                             <i>Quercus X organensis</i>
                                             <i>Quercus X pauciloba</i>
                                                   [Quercus X andrewsii]
                                                   [Quercus fendleri]
                                                   [Quercus undulata]
                                                   [Quercus venustula]
                                             <i>Quercus acapulcensis</i>
                                             <i>Quercus acerifolia</i>
                                             <i>Quercus acherdophylla</i>
               Quercus acherdophylla x Quercus crassifolia
               Quercus acherdophylla x Quercus hirtifolia
               Quercus acherdophylla x Quercus affinis
                                             <i>Quercus acrodonta</i>
                                             <i>Quercus acuta</i>
                                                   [Cyclobalanopsis acuta]
                                             <i>Quercus acutidens</i>
                                             <i>Quercus acutifolia</i>
                                                   [Quercus acatenangensis]
                                                   [Quercus grahamii]
                                                   [Quercus monserratensis]
                                                   [Quercus tenuiaristata]
                                             <i>Quercus acutissima</i>
                                             <i>Quercus aegilops</i>
                                             <i>Quercus aerea</i>
                                             <i>Quercus afares</i>
                                             <i>Quercus affinis</i>
                                                   [Quercus nitens var. subintegra]
                                                   [Quercus nitens]
               Quercus affinis x Quercus sartorii
               Quercus affinis x Quercus crassifolia
                                             <i>Quercus agrifolia</i>
                                               <i>Quercus agrifolia agrifolia</i>
                                               <i>Quercus agrifolia var. agrifolia</i>
                                               <i>Quercus agrifolia var. frutescens</i>
                                               <i>Quercus agrifolia var. oxyadenia</i>
                                             <i>Quercus ajoensis</i>
                                                   [Quercus turbinella subsp. ajoensis]
                                                   [Quercus turbinella var. ajoensis]
                                             <i>Quercus alba</i>
                                                   [Quercus alba f. latiloba]
                                                   [Quercus alba f. repanda]
                                                   [Quercus alba var. latiloba]
                                                   [Quercus alba var. subcaerulea]
                                                   [Quercus alba var. subflavea]
                                                   <i>Quercus alba f. alba</i>
                                               <i>Quercus alba var. gunnisonii</i>
                                               <i>Quercus alba var. palustris</i>
                                             <i>Quercus alba x lyrata</i>
                                             <i>Quercus albocincta</i>
                                             <i>Quercus albocincta x viminea</i>
                                             <i>Quercus aliena</i>
                                               <i>Quercus aliena var. acuteserrata</i>
                                               <i>Quercus aliena var. acutiserrata</i>
                                               <i>Quercus aliena var. aliena</i>
                                                     [Quercus acutidentata]
                                               <i>Quercus aliena var. pellucida</i>
                                             <i>Quercus alnifolia</i>
                                             <i>Quercus alpescens</i>
                                             <i>Quercus alveolata</i>
                                             <i>Quercus alvordiana</i>
                                             <i>Quercus ambigua</i>
                                             <i>Quercus anglohondurensis</i>
                                             <i>Quercus aquatica</i>
                                             <i>Quercus aquifolioides</i>
                                             <i>Quercus argentata</i>
                                             <i>Quercus ariifolia</i>
                                             <i>Quercus aristata</i>
                                             <i>Quercus arizonica</i>
                                               <i>Quercus arizonica var. wootoni</i>
                                             <i>Quercus arkansana</i>
                                                   [Quercus arkansana var. caput-rivuli]
                                             <i>Quercus austrina</i>
                                                   [Quercus durandii var. austrina]
                                             <i>Quercus baloot</i>
                                             <i>Quercus bambusifolia</i>
                                             <i>Quercus banisteri</i>
                                             <i>Quercus baronii</i>
                                             <i>Quercus barrancana</i>
                                             <i>Quercus basaseachicensis</i>
                                             <i>Quercus benthamii</i>
                                                   [Quercus baruensis]
                                                   [Quercus lowilliamsii]
                                             <i>Quercus berberidifolia</i>
                                             <i>Quercus bicolor</i>
                                                   [Quercus platanoides]
                                             <i>Quercus bicolorata</i>
                                             <i>Quercus blakei</i>
                                                   [Cyclobalanopsis blakei]
                                             <i>Quercus bocoynensis</i>
                                             <i>Quercus bolanyosensis</i>
                                             <i>Quercus boqueronae</i>
                                             <i>Quercus borealis</i>
                                               <i>Quercus borealis var. maxima</i>
                                             <i>Quercus boyntonii</i>
                                             <i>Quercus brandegeei</i>
                                                   [Quercus brandegei]
                                             <i>Quercus brantii</i>
                                             <i>Quercus breedloveana</i>
                                             <i>Quercus brenesii</i>
                                             <i>Quercus breweri</i>
                                             <i>Quercus brittonii</i>
                                             <i>Quercus broteroi</i>
                                               <i>Quercus broteroi subsp. broteroi</i>
                                                     [Quercus hybrida]
                                             <i>Quercus buckleyi</i>
                                             <i>Quercus bumelioides</i>
                                             <i>Quercus calliprinos</i>
               Quercus calophylla x Quercus laurina
               Quercus calophylla x Quercus sartorii
                                             <i>Quercus cambodiensis</i>
                                                   [Quercus auricoma]
                                             <i>Quercus canariensis</i>
                                                   [Quercus mirbeckii]
                                                   [Quercus viveri]
                                             <i>Quercus canbyi</i>
                                                   [Quercus alamarensis]
                                                   [Quercus canbyi f. ascendens]
                                                   [Quercus canbyi f. attenuata]
                                                   [Quercus canbyi f. berlandieri]
                                                   [Quercus canbyi f. karwinskii]
                                                   [Quercus canbyi f. pedunculata]
                                                   [Quercus canbyi f. setacea]
                                                   [Quercus canbyi f. subovatifolia]
                                                   [Quercus graciliformis f. parvilobata]
                                                   [Quercus graciliramis]
               Quercus canbyi x Quercus rysophylla
                                             <i>Quercus candicans</i>
                                                   [Quercus alamo]
                                                   [Quercus calophylla]
                                                   [Quercus candicans f. michoacana]
                                             <i>Quercus capesii</i>
                                             <i>Quercus caput-rivuli</i>
                                             <i>Quercus carmenensis</i>
                                             <i>Quercus carrissoana</i>
                                             <i>Quercus castanea</i>
                                                   [Quercus circummontana]
                                                   [Quercus impressa]
                                                   [Quercus rossii]
                                                   [Quercus simillima]
                                                   [Quercus subcrispata]
               Quercus castanea x Quercus crassipes
               Quercus castanea x Quercus grahamii
                                             <i>Quercus castaneifolia</i>
                                             <i>Quercus catesbaei</i>
                                             <i>Quercus cedrosensis</i>
                                             <i>Quercus centenaria</i>
                                             <i>Quercus centralis</i>
                                             <i>Quercus cerris</i>
                                                   [Quercus heterophylla]
                                             <i>Quercus championii</i>
                                                   [Cyclobalanopsis championii]
                                             <i>Quercus chapmanii</i>
                                                   [Quercus obtusiloba var. parvifolia]
                                             <i>Quercus charcasana</i>
                                             <i>Quercus chasei</i>
                                             <i>Quercus chenii</i>
                                             <i>Quercus chesosensis</i>
                                             <i>Quercus chevalieri</i>
                                             <i>Quercus chihuahuensis</i>
                                                   [Quercus jaliscensis]
                                                   [Quercus santaclarensis]
                                             <i>Quercus chihuahuensis x oblongifolia</i>
                                             <i>Quercus chincapin</i>
                                             <i>Quercus chinensis</i>
                                             <i>Quercus chrysolepis</i>
                                                   [Quercus chrysolepis f. grandis]
                                                   [Quercus chrysolepis f. pendula]
                                                   [Quercus chrysolepis var. hansenii]
                                               <i>Quercus chrysolepis var. chrysolepis</i>
                                                     [Quercus wilcoxii]
                                               <i>Quercus chrysolepis var. nana</i>
                                             <i>Quercus chuhuichupensis</i>
                                             <i>Quercus ciliaris</i>
                                                   [Quercus glauca var. gracilis]
                                             <i>Quercus cinerea</i>
                                             <i>Quercus clivicola</i>
                                             <i>Quercus coahuilensis</i>
                                             <i>Quercus coccifera</i>
                                                   [Ilex aculeata]
                                             <i>Quercus cocciferoides</i>
                                             <i>Quercus coccinea</i>
                                               <i>Quercus coccinea var. coccinea</i>
                                               <i>Quercus coccinea var. tuberculata</i>
                                             <i>Quercus coccolobifolia x viminea</i>
                                             <i>Quercus coffeicolor</i>
                                                   [Quercus aequivenulosa]
                                             <i>Quercus comptoniae</i>
                                             <i>Quercus concentrica</i>
                                             <i>Quercus conferta</i>
                                             <i>Quercus confertifolia</i>
                                             <i>Quercus confusa</i>
                                             <i>Quercus conspersa</i>
                                             <i>Quercus convallata</i>
                                                   [Quercus rhodophlebia f. apus]
                                             <i>Quercus conzattii</i>
                                             <i>Quercus copeyensis</i>
                                                   [Quercus pacayana]
                                             <i>Quercus cordifolia</i>
               Quercus cordifolia x Quercus tinkhami
                                             <i>Quercus cornelius-mulleri</i>
                                             <i>Quercus corrugata</i>
                                                   [Quercus aaata]
                                                   [Quercus pilgeriana]
                                                   [Quercus yousei]
                                             <i>Quercus cortesii</i>
                                             <i>Quercus costaricensis</i>
                                                   [Quercus irazuensis]
                                             <i>Quercus crassifolia</i>
                                                   [Quercus brachystachys]
                                                   [Quercus felipensis]
                                                   [Quercus miguelitensis]
                                                   [Quercus orbiculata]
                                                   [Quercus splendens var. pallidior]
               Quercus crassifolia x Quercus hirtifolia
               Quercus crassifolia x Quercus laurina
               Quercus crassifolia x Quercus mexicana
                                             <i>Quercus crassipes</i>
                                                   [Quercus cuajimalpana]
                                                   [Quercus mexicana var. glabrata]
               Quercus crassipes x Quercus laurina
               Quercus crassipes x Quercus mexicana
                                             <i>Quercus crassipocula</i>
                                             <i>Quercus cravenensis</i>
                                             <i>Quercus crispifolia</i>
                                             <i>Quercus crispipilis</i>
                                                   [Quercus chichavacana f. oblanceolata]
                                                   [Quercus chichavacana f. sublobata]
                                                   [Quercus chichavacana f. undulata]
                                                   [Quercus chichavacana]
                                                   [Quercus crispipilis var. pannosifolia]
                                                   [Quercus pannosifolia]
                                             <i>Quercus cualensis</i>
                                             <i>Quercus cuneata</i>
                                             <i>Quercus cupreata</i>
                                             <i>Quercus dalechampii</i>
                                             <i>Quercus decipiens</i>
                                             <i>Quercus delavayi</i>
                                             <i>Quercus delgadoana</i>
                                             <i>Quercus deliquescens</i>
                                             <i>Quercus dentata</i>
                                               <i>Quercus dentata subsp. dentata</i>
                                               <i>Quercus dentata subsp. stewardii</i>
                                               <i>Quercus dentata subsp. yunnanensis</i>
                                                     [Quercus malacotricha]
                                                     [Quercus yunnanensis]
                                             <i>Quercus depressa</i>
                                                   [Quercus subavenia]
                                             <i>Quercus depressipes</i>
                                                   [Quercus oblongifolia var. pallidinervis]
                                             <i>Quercus derrumbaderoensis</i>
                                             <i>Quercus deserticola</i>
                                                   [Quercus tamiapensis]
                                                   [Quercus texcocana]
                                             <i>Quercus devia</i>
                                             <i>Quercus digitata</i>
                                             <i>Quercus dilatata</i>
                                             <i>Quercus discreta</i>
                                             <i>Quercus diversifolia</i>
                                                   [Quercus bonplandiana]
                                             <i>Quercus dolicholepis</i>
                                             <i>Quercus douglasii</i>
                                               <i>Quercus douglasii var. novomexicana</i>
                                             <i>Quercus drummondii</i>
                                                   [Quercus stellata var. drummondii]
                                             <i>Quercus dumosa</i>
                                                   [Quercus dumosa f. crispata]
                                                   [Quercus dumosa f. diversifolia]
                                                   [Quercus dumosa f. linearis]
                                                   [Quercus dumosa f. myrtifolia]
                                               <i>Quercus dumosa var. acutidens</i>
                                               <i>Quercus dumosa var. alvordiana</i>
                                               <i>Quercus dumosa var. dumosa</i>
                                               <i>Quercus dumosa var. elegantula</i>
                                               <i>Quercus dumosa var. kinselae</i>
                                               <i>Quercus dumosa var. macdonaldii</i>
                                             <i>Quercus durandii</i>
                                               <i>Quercus durandii var. durandii</i>
                                             <i>Quercus durangensis</i>
                                             <i>Quercus durata</i>
                                               <i>Quercus durata durata</i>
                                               <i>Quercus durata var. durata</i>
                                                     [Quercus dumosa var. bullata]
                                               <i>Quercus durata var. gabrielensis</i>
                                             <i>Quercus duraznillo</i>
                                             <i>Quercus durifolia</i>
               Quercus durifolia x Quercus eduardi
                                             <i>Quercus echinacea</i>
                                             <i>Quercus edithiae</i>
                                                   [Cyclobalanopsis edithiae]
                                             <i>Quercus eduardi</i>
                                                   [Quercus oligodonta]
                                             <i>Quercus ellipsoidalis</i>
                                                   [Quercus ellipsoidalis var. kaposianensis]
                                             <i>Quercus elliptica</i>
                                                   [Quercus botryocarpa]
                                                   [Quercus chiquihuitillonis]
                                                   [Quercus comayaguana]
                                                   [Quercus exaristata]
                                                   [Quercus hondurensis]
                                                   [Quercus langlassei]
                                                   [Quercus peradifolia]
                                                   [Quercus yoroensis]
                                             <i>Quercus elmeri</i>
                                             <i>Quercus emoryi</i>
                                                   [Quercus balsequillana]
                                                   [Quercus duraznillo f. pinetorum]
               Quercus emoryi x Quercus jonesii
                                             <i>Quercus emoryi x viminea</i>
                                             <i>Quercus endemica</i>
                                             <i>Quercus engelmannii</i>
                                             <i>Quercus engleriana</i>
                                                   [Quercus obscura]
                                             <i>Quercus epileuca</i>
                                             <i>Quercus errans</i>
                                             <i>Quercus eugeniaefolia</i>
                                             <i>Quercus eumorpha</i>
                                             <i>Quercus excelsa</i>
                                             <i>Quercus fabrei</i>
                                             <i>Quercus faginea</i>
                                               <i>Quercus faginea subsp. broteroi</i>
                                               <i>Quercus faginea subsp. faginea</i>
                                                     [Quercus alpestris]
                                               <i>Quercus faginea subsp. maroccana</i>
                                             <i>Quercus falcata</i>
                                               <i>Quercus falcata falcata</i>
                                               <i>Quercus falcata michx. var. falcata</i>
                                               <i>Quercus falcata var. falcata</i>
                                               <i>Quercus falcata var. leucophylla</i>
                                               <i>Quercus falcata var. pagodifolia</i>
                                               <i>Quercus falcata var. subintegra</i>
                                               <i>Quercus falcata var. triloba</i>
                                             <i>Quercus faxonii</i>
                                             <i>Quercus fernaldii</i>
                                             <i>Quercus ferruginea</i>
                                             <i>Quercus filialis</i>
                                                   [Quercus dubia]
                                             <i>Quercus floccosa</i>
                                             <i>Quercus flocculenta</i>
                                                   [Quercus flocculenta f. incisa]
                                                   [Quercus flocculenta f. oblongifolia]
                                             <i>Quercus fontana</i>
                                             <i>Quercus frainetto</i>
                                                   [Quercus farnetto]
                                             <i>Quercus franchetii</i>
                                             <i>Quercus frutex</i>
                                             <i>Quercus fulva</i>
                                             <i>Quercus furfuracea</i>
                                             <i>Quercus fusiformis</i>
                                                   [Quercus virginiana var. fusiformis]
                                                   [Quercus virginiana var. macrophylla]
                                             <i>Quercus galeanensis</i>
                                             <i>Quercus galeotti</i>
                                             <i>Quercus gambelii</i>
                                                   [Quercus albifolia]
                                                   [Quercus gambelii var. utahensis]
                                                   [Quercus gambellii]
                                                   [Quercus marshii]
                                                   [Quercus undulata var. gambelii]
                                                   [Quercus undulata var. gunnisonii]
                                               <i>Quercus gambelii var. Gunnisonii</i>
                                               <i>Quercus gambelii var. bonina</i>
                                               <i>Quercus gambelii var. fendleri</i>
                                               <i>Quercus gambelii var. gambelii</i>
                                                     [Quercus eastwoodiae]
                                                     [Quercus gunnisonii]
                                                     [Quercus leptophylla]
                                                     [Quercus nitescens]
                                                     [Quercus novomexicana]
                                                     [Quercus submollis]
                                                     [Quercus utahensis]
                                                     [Quercus vreelandii]
                                             <i>Quercus gambelii X turbinella</i>
                                             <i>Quercus ganderi</i>
                                             <i>Quercus garlandensis</i>
                                             <i>Quercus garryana</i>
                                               <i>Quercus garryana garryana</i>
                                               <i>Quercus garryana var. breweri</i>
                                               <i>Quercus garryana var. fruticosa</i>
                                                     [Quercus lobata var. fruticosa]
                                               <i>Quercus garryana var. garryana</i>
                                                     [Quercus jacobi]
                                               <i>Quercus garryana var. semota</i>
                                             <i>Quercus gemelliflora</i>
                                             <i>Quercus geminata</i>
                                                   [Quercus virginiana f. grandifolia]
                                             <i>Quercus gentryi</i>
                                             <i>Quercus georgiana</i>
                                             <i>Quercus germana</i>
                                                   [Quercus substenocarpa]
               Quercus germana x Quercus liebmannii
               Quercus germana x Quercus sebifera
                                             <i>Quercus gilliana</i>
                                             <i>Quercus gilva</i>
                                                   [Cyclobalanopsis gilva]
                                             <i>Quercus glabra</i>
                                             <i>Quercus glabrescens</i>
                                                   [Quercus radlkoferiana]
                                             <i>Quercus glauca</i>
                                                   [Cyclobalanopsis glauca]
                                                   [Cyclobalanopsis globosa]
                                                   [Quercus glauca var. amamiana]
                                                   [Quercus globosa]
                                             <i>Quercus glaucescens</i>
                                             <i>Quercus graciliformis</i>
                                                   [Quercus gracilliformes]
                                             <i>Quercus gracilior</i>
                                             <i>Quercus gracilis</i>
               Quercus grahamii x Quercus mexicana
                                             <i>Quercus grandidentata</i>
                                             <i>Quercus grandis</i>
                                             <i>Quercus granulata</i>
                                             <i>Quercus gravesii</i>
                                                   [Quercus coccinea var. microcarpa]
                                                   [Quercus texana var. chesosensis]
                                                   [Quercus texana var. stellapila]
                                             <i>Quercus greggii</i>
                                                   [Quercus reticulata f. pungens]
                                                   [Quercus reticulata var. greggii]
                                             <i>Quercus griffithii</i>
                                             <i>Quercus grisea</i>
                                                   [Quercus alamosensis]
                                                   [Quercus undulata var. grisea]
                                             <i>Quercus guadalupensis</i>
                                             <i>Quercus guyavifolia</i>
                                             <i>Quercus harbisonii</i>
                                             <i>Quercus hartwegii</i>
                                             <i>Quercus hartwissiana</i>
                                             <i>Quercus hastata</i>
                                             <i>Quercus havardii</i>
                                                   [Quercus harvardii var. harvardii]
                                                   [Quercus harvardii var. tuckeri]
                                                   [Quercus harvardii]
                                               <i>Quercus havardii var. havardii</i>
                                               <i>Quercus havardii var. tuckeri</i>
                                             <i>Quercus helferiana</i>
                                             <i>Quercus hemisphaerica</i>
                                                   [Quercus maritima]
                                                   [Quercus virens var. maritima]
                                               <i>Quercus hemisphaerica var. hemisphaerica</i>
                                               <i>Quercus hemisphaerica var. maritima</i>
                                             <i>Quercus hinckleyi</i>
                                             <i>Quercus hintonii</i>
                                                   [Quercus apiophylla]
                                                   [Quercus hintoni]
                                                   [Quercus sagata]
                                             <i>Quercus hintoniorum</i>
                                             <i>Quercus hirtifolia</i>
                                             <i>Quercus hispanica</i>
                                             <i>Quercus hondae</i>
                                             <i>Quercus howellii</i>
                                             <i>Quercus huicholensis</i>
                                             <i>Quercus humboldtii</i>
                                             <i>Quercus humilis</i>
                                             <i>Quercus hypoleucoides</i>
                                                   [Quercus hypoleuca]
                                             <i>Quercus hypophaea</i>
                                                   [Cyclobalanopsis hypophaea]
                                             <i>Quercus hypoxantha</i>
                                                   [Quercus errans f. graciliramis]
                                             <i>Quercus idonea</i>
                                             <i>Quercus ignaciensis</i>
                                             <i>Quercus ilex</i>
                                               <i>Quercus ilex subsp. ballota</i>
                                               <i>Quercus ilex subsp. ilex</i>
                                             <i>Quercus ilicifolia</i>
                                             <i>Quercus iltisii</i>
                                             <i>Quercus imbricaria</i>
                                                   [Quercus latifolia]
                                             <i>Quercus incana</i>
                                             <i>Quercus incomita</i>
                                             <i>Quercus infectoria</i>
                                               <i>Quercus infectoria subsp. veneris</i>
                                             <i>Quercus infralutea</i>
                                             <i>Quercus inopina</i>
                                             <i>Quercus insignis</i>
                                                   [Quercus davidsoniae]
                                                   [Quercus schippii]
                                                   [Quercus seibertii]
                                                   [Quercus strombocarpa]
                                                   [Quercus tomentocaulis]
                                             <i>Quercus intricata</i>
                                                   [Quercus intricata f. angusta]
                                                   [Quercus intricata f. erratica]
                                                   [Quercus intricata f. ovata]
                                                   [Quercus microphylla var. crispata]
                                             <i>Quercus invaginata</i>
                                                   [Quercus invaginata f. purpusiana]
                                             <i>Quercus ithaburensis</i>
                                               <i>Quercus ithaburensis subsp. ithaburensis</i>
                                               <i>Quercus ithaburensis subsp. macrolepis</i>
                                             <i>Quercus john-tuckeri</i>
                                             <i>Quercus jonesii</i>
                                                   [Quercus coccolobaefolia]
                                                   [Quercus coccolobifolia]
                                                   [Quercus endlichiana f. minor]
                                                   [Quercus endlichiana f. serrata]
                                                   [Quercus endlichiana]
               Quercus jonesii x Quercus eduardi
                                             <i>Quercus kelloggii</i>
                                                   [Quercus californica]
                                             <i>Quercus kerrii</i>
                                             <i>Quercus kingiana</i>
                                             <i>Quercus knoblochii</i>
                                             <i>Quercus laceyi</i>
                                                   [Quercus glaucoides]
                                                   [Quercus microlepis]
                                             <i>Quercus laeta</i>
                                                   [Quercus clivicola f. crenifolia]
                                                   [Quercus clivicola f. dentata]
                                                   [Quercus clivicola f. elongata]
                                                   [Quercus obscura var. perpusilla]
                                                   [Quercus prinopsis]
               Quercus laeta x Quercus microphylla
               Quercus laeta x Quercus tinkhamii
                                             <i>Quercus laevis</i>
                                             <i>Quercus lamellosa</i>
                                               <i>Quercus lamellosa var. lamellosa</i>
                                                     [Quercus imbricata]
                                             <i>Quercus lanata</i>
                                             <i>Quercus lancifolia</i>
                                                   [Quercus cyclobalanoides]
                                                   [Quercus molinae]
                                                   [Quercus ovandensis]
                                                   [Quercus pilarius]
                                             <i>Quercus lanigera</i>
                                             <i>Quercus laurifolia</i>
                                                   [Quercus laurifolia var. tridentata]
                                                   [Quercus obtusa var. obovatifolia]
                                             <i>Quercus laurina</i>
                                                   [Quercus barbinervis]
                                                   [Quercus bourgaei var. ilicifolia]
                                                   [Quercus bourgaei]
                                                   [Quercus chrysophylla]
                                                   [Quercus esesmilensis]
                                                   [Quercus lanceolata]
                                                   [Quercus nitens var. major]
                                                   [Quercus orizabae]
                                                   [Quercus roseovenulosa]
                                                   [Quercus treleaseana]
                                             <i>Quercus laxa</i>
                                             <i>Quercus leiophylla</i>
                                             <i>Quercus lesueuri</i>
                                             <i>Quercus libani</i>
                                             <i>Quercus liboensis</i>
                                             <i>Quercus liebmannii</i>
                                                   [Quercus poculifer]
                                               <i>Quercus liebmannii x Quercus microphylla</i>
                                             <i>Quercus lineata</i>
                                             <i>Quercus lipacon</i>
                                             <i>Quercus lobata</i>
                                                   [Quercus hindsii]
                                                   [Quercus lobata var. argillara]
                                                   [Quercus lobata var. insperata]
                                                   [Quercus lobata var. turbinata]
                                                   [Quercus lobata var. walteri]
                                             <i>Quercus loeseneri</i>
                                             <i>Quercus longiglanda</i>
                                             <i>Quercus longinux</i>
                                                   [Cyclobalanopsis longinux]
                                             <i>Quercus longispica</i>
                                             <i>Quercus lowii</i>
                                             <i>Quercus ludoviciana</i>
                                             <i>Quercus lungmaiensis</i>
                                                   [Quercus austroglauca]
                                             <i>Quercus lusitanica</i>
                                             <i>Quercus lyrata</i>
                                             <i>Quercus macdonaldii</i>
                                               <i>Quercus macdonaldii var. elegantula</i>
                                             <i>Quercus macdougallii</i>
                                             <i>Quercus macnabiana</i>
                                             <i>Quercus macranthera</i>
                                               <i>Quercus macranthera subsp. syspirensis</i>
                                             <i>Quercus macrocalyx</i>
                                                   [Cyclobalanopsis fleuryi]
                                                   [Quercus fleuryi]
                                             <i>Quercus macrocarpa</i>
                                               <i>Quercus macrocarpa subsp. macrocarpa</i>
                                               <i>Quercus macrocarpa var. depressa</i>
                                               <i>Quercus macrocarpa var. macrocarpa</i>
                                               <i>Quercus macrocarpa var. oliviformis</i>
                                             <i>Quercus macrolepis</i>
                                             <i>Quercus macrophylla</i>
                                             <i>Quercus macvaughii</i>
                                             <i>Quercus magnoliaefolia</i>
                                             <i>Quercus magnoliifolia</i>
                                                   [Quercus nudinervis]
                                             <i>Quercus mandanensis</i>
                                             <i>Quercus margaretiae</i>
                                             <i>Quercus margaretta</i>
                                                   [Quercus stellata var. margaretta]
                                             <i>Quercus margarettae</i>
                                                   [Quercus minor var. margarettae]
                                             <i>Quercus margarettiae</i>
                                                   [Quercus stellata var. margarettiae]
                                             <i>Quercus marilandica</i>
                                               <i>Quercus marilandica marilandica</i>
                                               <i>Quercus marilandica var. ashei</i>
                                               <i>Quercus marilandica var. ashii</i>
                                               <i>Quercus marilandica var. marilandica</i>
                                             <i>Quercus martinezii</i>
                                             <i>Quercus marylandica</i>
                                             <i>Quercus maxima</i>
                                             <i>Quercus mcvaughii</i>
                                             <i>Quercus meavei</i>
                                             <i>Quercus mespilifolia</i>
                                                   [Quercus mespilifolioides]
                                             <i>Quercus mexiae</i>
                                             <i>Quercus mexicana</i>
                                                   [Quercus pablillensis]
                                                   [Quercus rugulosa f. subtruncata]
                                                   [Quercus rugulosa]
                                             <i>Quercus michauxii</i>
                                                   [Quercus houstoniana]
                                                   [Quercus prinus var. michauxii]
                                                   [Quercus prinus]
                                             <i>Quercus microcarya</i>
                                             <i>Quercus microphylla</i>
                                             <i>Quercus minima</i>
                                                   [Quercus virens var. dentata]
                                             <i>Quercus minor</i>
                                             <i>Quercus miquihuanensis</i>
                                             <i>Quercus mississippiensis</i>
                                             <i>Quercus miyagii</i>
                                             <i>Quercus mohriana</i>
                                             <i>Quercus mollis</i>
                                             <i>Quercus mongolica</i>
                                               <i>Quercus mongolica subsp. crispula</i>
                                                     [Quercus crispula]
                                                     [Quercus mongolica var. grosseserrata]
                                               <i>Quercus mongolica var. crispula</i>
                                                     [Quercus crispula var. horikawae]
                                             <i>Quercus monimotricha</i>
                                             <i>Quercus montana</i>
                                                   [Quercus prinus var. monticola]
                                                   [Quercus versicolor]
                                             <i>Quercus monterreyensis</i>
                                             <i>Quercus monticola</i>
                                             <i>Quercus morehus</i>
                                                   [Quercus moreha]
                                             <i>Quercus moreliana</i>
                                             <i>Quercus morii</i>
                                             <i>Quercus moultonensis</i>
                                             <i>Quercus muehlenbergii</i>
                                                   [Quercus acuminata var. alexanderi]
                                                   [Quercus acuminata]
                                                   [Quercus alexanderi]
                                                   [Quercus brayi]
                                                   [Quercus muehlenbergii f. alexanderi]
                                                   [Quercus muehlenbergii var. alexanderi]
                                                   [Quercus muehlenbergii var. brayi]
                                                   [Quercus muhlenbergii]
                                                   [Quercus prinoides var. acuminata]
                                                   [Quercus prinoides var. rufescens]
                                               <i>Quercus muehlenbergii var. muehlenbergii</i>
                                             <i>Quercus mulleri</i>
                                             <i>Quercus multinervis</i>
                                                   [Cyclobalanopsis multinervis]
                                             <i>Quercus munzii</i>
                                             <i>Quercus mutabilis</i>
                                             <i>Quercus myrsinifolia</i>
                                                   [Cyclobalanopsis myrsinifolia]
                                             <i>Quercus myrtifolia</i>
                                                   [Quercus phellos var. arenaria]
                                             <i>Quercus nana</i>
                                             <i>Quercus neoashei</i>
                                             <i>Quercus nigra</i>
                                                   [Quercus aquatica var. hybrida]
                                                   [Quercus nigra f. plenocarpa]
                                                   [Quercus nigra f. tridentifera]
                                                   [Quercus nigra var. megacarpa]
                                                   [Quercus nigra var. tridentata]
                                                   [Quercus nigra var. tridentifera]
                                                   [Quercus x ludoviciana var. microcarpa]
                                               <i>Quercus nigra var. heterophylla</i>
                                               <i>Quercus nigra var. marilandica</i>
                                               <i>Quercus nigra var. nigra</i>
                                             <i>Quercus nixoniana</i>
                                             <i>Quercus oajacana</i>
                                             <i>Quercus oblongata</i>
                                                   [Quercus leucotrichophora]
                                             <i>Quercus oblongifolia</i>
                                             <i>Quercus oblongifolia x toumeyi</i>
                                             <i>Quercus obtusa</i>
                                             <i>Quercus obtusata</i>
                                                   [Quercus alvarezensis]
                                                   [Quercus atriglans]
                                                   [Quercus panduriformis f. rubrinervis]
                                                   [Quercus panduriformis]
                                             <i>Quercus obtusifolia</i>
                                                   [Quercus undulata var. obtusifolia]
                                             <i>Quercus obtusiloba</i>
                                             <i>Quercus ocoteifolia</i>
                                                   [Quercus nitens var. podocarpa]
                                             <i>Quercus oerstediana</i>
                                             <i>Quercus oglethorpensis</i>
                                             <i>Quercus oleoides</i>
                                                   [Quercus oleoides var. australis]
                                             <i>Quercus omissa</i>
                                             <i>Quercus oocarpa</i>
                                                   [Quercus yunckeri]
                                             <i>Quercus opaca</i>
                                             <i>Quercus organensis</i>
                                             <i>Quercus oxyadenia</i>
                                             <i>Quercus oxyodon</i>
                                             <i>Quercus pachyloma</i>
                                                   [Cyclobalanopsis pachyloma]
                                             <i>Quercus pacifica</i>
                                             <i>Quercus pagoda</i>
                                                   [Quercus pagoda var. leucophylla]
                                             <i>Quercus pagodifolia</i>
                                             <i>Quercus pallescens</i>
                                             <i>Quercus palmeri</i>
                                                   [Quercus chrysolepis var. palmeri]
                                                   [Quercus chrysolepis var. palneri]
                                                   [Quercus dunnii]
                                             <i>Quercus palustris</i>
                                             <i>Quercus panamandinaea</i>
                                             <i>Quercus pannosa</i>
                                             <i>Quercus parvula</i>
                                               <i>Quercus parvula var. parvula</i>
                                               <i>Quercus parvula var. shrevei</i>
                                                     [Quercus shrevei]
                                               <i>Quercus parvula var. tamalpaisensis</i>
                                             <i>Quercus pauciloba</i>
                                             <i>Quercus paxtalensis</i>
                                             <i>Quercus peduncularis</i>
                                                   [Quercus achoteana]
                                                   [Quercus aguana]
                                                   [Quercus dolichopus]
                                                   [Quercus martensiana f. berlandieri]
                                                   [Quercus martensiana]
                                                   [Quercus pilicaulis f. elongata]
                                                   [Quercus pilicaulis f. exserta]
                                                   [Quercus pilicaulis]
                                                   [Quercus tomentosa var. communis]
               Quercus peduncularis x Quercus purulhana
                                             <i>Quercus peninsularis</i>
                                             <i>Quercus pennivenia</i>
                                             <i>Quercus perpallida</i>
                                             <i>Quercus perseaefolia</i>
                                             <i>Quercus persica</i>
                                             <i>Quercus petraea</i>
                                               <i>Quercus petraea subsp. iberica</i>
                                               <i>Quercus petraea subsp. petraea</i>
                                               <i>Quercus petraea subsp. pinnatiloba</i>
                                               <i>Quercus petraea subsp. polycarpa</i>
                                                     [Quercus iberica]
                                             <i>Quercus phanera</i>
                                             <i>Quercus phellos</i>
                                                   [Quercus phellos f. intonsa]
                                               <i>Quercus phellos var. laurifolia</i>
                                             <i>Quercus phillyraeoides</i>
                                             <i>Quercus phillyreoides</i>
                                             <i>Quercus pinnativenulosa</i>
                                             <i>Quercus planipocula</i>
                                             <i>Quercus platyphylla</i>
                                             <i>Quercus poilanei</i>
                                             <i>Quercus polycarpa</i>
                                             <i>Quercus polymorpha</i>
                                                   [Quercus germana var. lemmonii]
                                                   [Quercus petiolaris]
                                                   [Quercus polymorpha f. angustifolia]
                                             <i>Quercus pontica</i>
                                             <i>Quercus porphyrogenita</i>
                                             <i>Quercus potosina</i>
                                                   [Quercus jaralensis f. berlandieri]
                                                   [Quercus jaralensis]
                                             <i>Quercus praeco</i>
                                             <i>Quercus praineana</i>
                                             <i>Quercus pricei</i>
                                             <i>Quercus pringlei</i>
                                                   [Quercus filiformis]
                                                   [Quercus pringlei f. dentata]
                                             <i>Quercus prinodes</i>
                                             <i>Quercus prinoides</i>
                                                   [Quercus chinquapin]
                                                   [Quercus muehlenbergii var. humilis]
                                                   [Quercus prinus var. humilis]
                                                   [Quercus rufescens]
                                               <i>Quercus prinoides var. prinoides</i>
                                             <i>Quercus prinoides x Q. macrocarpa</i>
                                             <i>Quercus pruinosa</i>
                                             <i>Quercus pseudococcifera</i>
                                             <i>Quercus pubescens</i>
                                                   [Quercus conglomerata]
                                                   [Quercus lanuginosa]
                                               <i>Quercus pubescens subsp. pubescens</i>
                                                     [Quercus brachyphylla]
                                                     [Quercus virgiliana]
                                             <i>Quercus pulchella</i>
                                             <i>Quercus pumila</i>
                                                   [Quercus cinerea var. pumila]
                                                   [Quercus elliottii]
                                                   [Quercus phellos var. pumila]
                                             <i>Quercus pungens</i>
                                                   [Quercus pungens var. pungens]
                                                   [Quercus undulata var. pungens]
                                                   [Quercus undulata var. wrightii]
                                               <i>Quercus pungens subsp. vaseyana</i>
                                             <i>Quercus purulhana</i>
                                             <i>Quercus pyramidalis</i>
                                             <i>Quercus pyrenaica</i>
                                                   [Quercus toza]
                                             <i>Quercus radiata</i>
                                             <i>Quercus rapurahuensis</i>
                                             <i>Quercus rehderiana</i>
                                                   [Quercus pseudosemecarpifolia]
                                                   [Quercus semecarpifolia var. glabra]
                                             <i>Quercus rekonis</i>
                                             <i>Quercus repanda</i>
                                             <i>Quercus resinosa</i>
               Quercus resinosa x Quercus rugosa
                                             <i>Quercus retusa</i>
                                             <i>Quercus revoluta</i>
                                             <i>Quercus rhysophylla</i>
                                             <i>Quercus richteri</i>
                                             <i>Quercus robur</i>
                                                   [Quercus microcarpa]
                                                   [Quercus pedunculata]
                                                   [Quercus robur var. fastigiata]
                                                   [Quercus tristis]
                                                   <i>Quercus robur f. fastigiata</i>
                                               <i>Quercus robur subsp. pedunculiflora</i>
                                                     [Quercus pedunculiflora]
                                               <i>Quercus robur subsp. robur</i>
                                                     [Quercus axillaris]
                                                     [Quercus dacica]
                                                     [Quercus tricolor]
                                             <i>Quercus robusta</i>
                                             <i>Quercus rolfsii</i>
                                             <i>Quercus rotundifolia</i>
                                             <i>Quercus rubra</i>
                                                   [Quercus borealis var. flabellata]
                                                   [Quercus rubra var. maxima]
                                                   [Quercus rubra var. ramosissima]
                                               <i>Quercus rubra var. ambigua</i>
                                               <i>Quercus rubra var. borealis</i>
                                               <i>Quercus rubra var. rubra</i>
                                             <i>Quercus rubramenta</i>
                                             <i>Quercus rudkinii</i>
                                             <i>Quercus rugosa</i>
                                                   [Quercus diversicolor var. mearnsii]
                                                   [Quercus diversicolor]
                                                   [Quercus dugesii]
                                                   [Quercus innuncupata]
                                                   [Quercus purpusii]
                                                   [Quercus reticulata]
                                                   [Quercus rhodophlebia f. applanata]
                                                   [Quercus rhodophlebia f. concava]
                                                   [Quercus rhodophlebia f. crenata]
                                                   [Quercus rhodophlebia]
                                             <i>Quercus runcinatifolia</i>
                                             <i>Quercus rydbergiana</i>
                                             <i>Quercus rysophylla</i>
                                             <i>Quercus sadleriana</i>
                                             <i>Quercus sagraeana</i>
                                             <i>Quercus sagrana</i>
                                                   [Quercus cubana]
                                             <i>Quercus salicifolia</i>
                                                   [Quercus duratifolia]
                                                   [Quercus gulielmi-treleasei]
                                             <i>Quercus salicina</i>
                                                   [Quercus stenophylla]
                                             <i>Quercus saltillensis</i>
                                                   [Quercus carnerosana]
                                             <i>Quercus sapotaefolia</i>
                                             <i>Quercus sapotifolia</i>
                                                   [Quercus perseifolia]
                                                   [Quercus persiifolia]
                                                   [Quercus siguatepequeana]
                                                   [Quercus totutlensis]
                                             <i>Quercus sartorii</i>
                                                   [Quercus sartorii f. magna]
                                             <i>Quercus schneckii</i>
                                             <i>Quercus schochiana</i>
                                             <i>Quercus schottkyana</i>
                                             <i>Quercus scytophylla</i>
                                             <i>Quercus sebifera</i>
                                                   [Quercus schenckiana]
                                                   [Quercus trinidadensis]
                                             <i>Quercus seemannii</i>
                                                   [Quercus boquetensis]
                                                   [Quercus borucasana]
                                                   [Quercus citrifolia]
                                                   [Quercus eugeniifolia]
                                                   [Quercus flagellifera]
                                             <i>Quercus segoviensis</i>
                                                   [Quercus achoteana var. sublanosa]
                                                   [Quercus peduncularis var. sublanosa]
                                             <i>Quercus semecarpifolia</i>
                                             <i>Quercus senescens</i>
                                             <i>Quercus sentenelensis</i>
                                             <i>Quercus serrata</i>
                                               <i>Quercus serrata subsp. serrata</i>
                                                     [Quercus glandulifera var. brevipetiolata]
                                                     [Quercus glandulifera]
                                               <i>Quercus serrata var. brevipetiolata</i>
                                             <i>Quercus sessiliflora</i>
                                             <i>Quercus sessilifolia</i>
                                                   [Quercus nubium]
                                                   [Quercus paucidentata]
                                             <i>Quercus sessilis</i>
                                             <i>Quercus shumardii</i>
                                               <i>Quercus shumardii var. acerifolia</i>
                                               <i>Quercus shumardii var. schneckii</i>
                                               <i>Quercus shumardii var. shumardii</i>
                                               <i>Quercus shumardii var. stenocarpa</i>
                                             <i>Quercus sideroxyla</i>
                                                   [Quercus incarnata]
                                                   [Quercus sideroxyla f. aquifolia]
                                                   [Quercus sideroxyla f. ciliifera]
                                             <i>Quercus sierramadrensis</i>
                                             <i>Quercus similis</i>
                                                   [Quercus ashei]
                                                   [Quercus margaretta var. paludosa]
                                             <i>Quercus sinuata</i>
                                               <i>Quercus sinuata sinuata</i>
                                               <i>Quercus sinuata subsp. breviloba</i>
                                               <i>Quercus sinuata var. breviloba</i>
                                                     [Quercus annulata]
                                                     [Quercus breviloba f. argentata]
                                                     [Quercus breviloba]
                                                     [Quercus durandii var. breviloba]
                                                     [Quercus obtusifolia var. breviloba]
                                                     [Quercus san-sabeana]
                                                     [Quercus sinuata var. san-sabeana]
                                                     [Quercus undulata var. breviloba]
                                               <i>Quercus sinuata var. sinuata</i>
                                             <i>Quercus skinneri</i>
                                                   [Quercus chiapasensis]
                                                   [Quercus hemipteroides]
                                                   [Quercus trichodonta]
                                             <i>Quercus smallii</i>
                                             <i>Quercus sonomensis</i>
                                             <i>Quercus sororia</i>
                                             <i>Quercus spicata</i>
                                             <i>Quercus spinosa</i>
                                             <i>Quercus splendens</i>
                                             <i>Quercus standleyi</i>
                                             <i>Quercus stellata</i>
                                                   [Quercus floridana]
                                                   [Quercus stellata var. anomala]
                                                   [Quercus stellata var. palmeri]
                                                   [Quercus stellata var. rufescens]
                                               <i>Quercus stellata var. araniosa</i>
                                               <i>Quercus stellata var. attenuata</i>
                                               <i>Quercus stellata var. boyntonii</i>
                                               <i>Quercus stellata var. margarettae</i>
                                               <i>Quercus stellata var. mississippiensis</i>
                                               <i>Quercus stellata var. paludosa</i>
                                               <i>Quercus stellata var. parviloba</i>
                                               <i>Quercus stellata var. stellata</i>
                                             <i>Quercus stelloides</i>
                                             <i>Quercus stenophylloides</i>
                                                   [Cyclobalanopsis stenophylloides]
                                             <i>Quercus sterretii</i>
                                             <i>Quercus stewardiana</i>
                                                   [Cyclobalanopsis stewardiana]
                                             <i>Quercus stewardii</i>
                                             <i>Quercus stipularis</i>
                                             <i>Quercus striatula</i>
               Quercus striatula x Quercus tinkhamii
                                             <i>Quercus subconvexa</i>
                                             <i>Quercus suber</i>
                                             <i>Quercus suberoides</i>
                                             <i>Quercus subintegra</i>
                                             <i>Quercus subsericea</i>
                                             <i>Quercus subspathulata</i>
                                                   [Quercus pallidifolia]
                                             <i>Quercus substellata</i>
                                             <i>Quercus subtriloba</i>
                                             <i>Quercus succulenta</i>
                                             <i>Quercus sundaica</i>
                                             <i>Quercus supranitida</i>
                                                   [Quercus revoluta f. acuta]
                                             <i>Quercus tarahumara</i>
                                             <i>Quercus tardifolia</i>
                                             <i>Quercus tarokoensis</i>
                                             <i>Quercus tatakaensis</i>
                                             <i>Quercus texana</i>
                                                   [Quercus nuttallii var. cachensis]
                                                   [Quercus nuttallii var. texana]
                                                   [Quercus nuttallii]
                                                   [Quercus rubra var. texana]
                                                   [Quercus shumardii var. microcarpa]
                                                   [Quercus shumardii var. texana]
                                             <i>Quercus tinctoria</i>
                                               <i>Quercus tinctoria var. californica</i>
                                             <i>Quercus tinkhami</i>
                                             <i>Quercus tinkhamii</i>
                                             <i>Quercus tomentella</i>
                                             <i>Quercus tomentosa</i>
                                             <i>Quercus tomentosicupula</i>
                                             <i>Quercus tonduzii</i>
                                             <i>Quercus tottenii</i>
                                             <i>Quercus toumeyi</i>
                                             <i>Quercus toxicodendrifolia</i>
                                             <i>Quercus transmontana</i>
                                             <i>Quercus tridens</i>
                                             <i>Quercus tridentata</i>
                                             <i>Quercus triloba</i>
                                             <i>Quercus trinitatis</i>
                                             <i>Quercus trojana</i>
                                                   [Quercus macedonica]
                                             <i>Quercus tuberculata</i>
                                             <i>Quercus tuitensis</i>
                                             <i>Quercus turbinella</i>
                                                   [Quercus dumosa var. turbinella]
                                                   [Quercus subturbinella]
                                               <i>Quercus turbinella subsp. californica</i>
                                               <i>Quercus turbinella subsp. turbinella</i>
                                               <i>Quercus turbinella turbinella</i>
                                               <i>Quercus turbinella var. californica</i>
                                               <i>Quercus turbinella var. turbinella</i>
                                             <i>Quercus undata</i>
                                             <i>Quercus urbani</i>
                                             <i>Quercus urbanii</i>
                                             <i>Quercus uruapanensis</i>
                                             <i>Quercus uxoris</i>
                                             <i>Quercus vaccinifolia</i>
                                                   [Quercus chrysolepis var. vaccinifolia]
                                             <i>Quercus vacciniifolia</i>
                                                   [Quercus chrysolepis var. vacciniifolia]
                                             <i>Quercus variabilis</i>
                                             <i>Quercus vaseyana</i>
                                                   [Quercus pungens var. vaseyana]
                                                   [Quercus sillae]
                                             <i>Quercus vellifera</i>
                                             <i>Quercus velutina</i>
                                                   [Quercus coccinea var. tinctoria]
                                                   [Quercus velutina f. missouriensis]
                                                   [Quercus velutina var. missouriensis]
                                               <i>Quercus velutina var. velutina</i>
                                             <i>Quercus verde</i>
                                             <i>Quercus vexans</i>
                                             <i>Quercus vicentensis</i>
                                                   [Quercus comasaguana]
                                                   [Quercus siltepecana]
                                             <i>Quercus viminea</i>
                                             <i>Quercus virens</i>
                                             <i>Quercus virginiana</i>
                                                   [Quercus virginiana var. eximea]
                                                   [Quercus virginiana var. virescens]
                                               <i>Quercus virginiana var. geminata</i>
                                               <i>Quercus virginiana var. maritima</i>
                                               <i>Quercus virginiana var. minima</i>
                                               <i>Quercus virginiana var. virginiana</i>
                                             <i>Quercus virginiana x Quercus stellata</i>
                                             <i>Quercus walteriana</i>
                                             <i>Quercus welshii</i>
                                             <i>Quercus willdenowiana</i>
                                             <i>Quercus wislizeni</i>
                                                   [Quercus wislizenii var. frutescens]
                                                   [Quercus wislizenii var. wislizenii]
                                                   [Quercus wislizenii]
                                               <i>Quercus wislizeni var. frutescens</i>
                                               <i>Quercus wislizeni var. wislizeni</i>
                                               <i>Quercus wislizeni wislizeni</i>
                                             <i>Quercus wutaishanica</i>
                                                   [Quercus liaotungensis]
                                             <i>Quercus x acutidens</i>
                                             <i>Quercus x alvordiana</i>
                                             <i>Quercus x anceps</i>
                                             <i>Quercus x asheana</i>
                                             <i>Quercus x ashei</i>
                                                   [Quercus asheana]
                                             <i>Quercus x atlantica</i>
                                             <i>Quercus x baenitzii</i>
                                             <i>Quercus x basaseachicensis</i>
                                             <i>Quercus x beaumontiana</i>
                                             <i>Quercus x beckyae</i>
                                             <i>Quercus x benderi</i>
                                             <i>Quercus x bernardensis</i>
                                             <i>Quercus x bernardiensis</i>
                                             <i>Quercus x bimundorum</i>
                                             <i>Quercus x blufftonensis</i>
                                             <i>Quercus x brittonii</i>
                                             <i>Quercus x burnetensis</i>
                                             <i>Quercus x byarsii</i>
                                             <i>Quercus x caduca</i>
                                             <i>Quercus x caesariensis</i>
                                             <i>Quercus x capesii</i>
                                             <i>Quercus x carolinensis</i>
                                             <i>Quercus x carrissoana</i>
                                             <i>Quercus x chasei</i>
                                             <i>Quercus x cocksii</i>
                                             <i>Quercus x columnaris</i>
                                             <i>Quercus x comptoniae</i>
                                             <i>Quercus x cravenensis</i>
                                             <i>Quercus x demareei</i>
                                             <i>Quercus x discreta</i>
                                             <i>Quercus x diversiloba</i>
                                             <i>Quercus x drummondii</i>
                                                   [Quercus x pseudomargarettiae]
                                             <i>Quercus x dubia</i>
                                             <i>Quercus x egglestonii</i>
                                                   [Quercus eggelstonii]
                                             <i>Quercus x eplingii</i>
                                             <i>Quercus x fallax</i>
                                             <i>Quercus x faxonii</i>
                                             <i>Quercus x fernaldii</i>
                                             <i>Quercus x filialis</i>
                                             <i>Quercus x ganderi</i>
                                             <i>Quercus x garlandensis</i>
                                             <i>Quercus x giffordii</i>
                                             <i>Quercus x grandidentata</i>
                                             <i>Quercus x guadalupensis</i>
                                             <i>Quercus x harbisonii</i>
                                             <i>Quercus x hastingsii</i>
                                             <i>Quercus x heterophylla</i>
                                             <i>Quercus x hillii</i>
                                             <i>Quercus x hispanica</i>
                                                   [Quercus turneri]
                                             <i>Quercus x howellii</i>
                                             <i>Quercus x humidicola</i>
                                             <i>Quercus x inaequalis</i>
                                             <i>Quercus x incomita</i>
                                             <i>Quercus x inconstans</i>
                                                   [Quercus livermorensis]
                                             <i>Quercus x introgressa</i>
                                             <i>Quercus x jolonensis</i>
                                             <i>Quercus x joorii</i>
                                                   [Quercus jorrii]
                                             <i>Quercus x kinselae</i>
                                             <i>Quercus x kinseliae</i>
                                             <i>Quercus x lowellii</i>
                                             <i>Quercus x ludoviciana</i>
                                             <i>Quercus x macdonaldii</i>
                                             <i>Quercus x macnabiana</i>
                                                   [Quercus x mahonii]
                                             <i>Quercus x mahlonii</i>
                                             <i>Quercus x megaleia</i>
                                             <i>Quercus x mellichampii</i>
                                             <i>Quercus x moreha</i>
                                             <i>Quercus x morehus</i>
                                             <i>Quercus x moultonensis</i>
                                                   [Quercus shirlingii]
                                             <i>Quercus x munzii</i>
                                             <i>Quercus x mutabilis</i>
                                                   [Quercus mutalibis]
                                             <i>Quercus x neomairei</i>
                                                   [Quercus mairei]
                                             <i>Quercus x neopalmeri</i>
                                             <i>Quercus x neotharpii</i>
                                             <i>Quercus x nessiana</i>
                                             <i>Quercus x oviedoensis</i>
                                             <i>Quercus x palmeriana</i>
                                             <i>Quercus x pinetorum</i>
                                             <i>Quercus x podophylla</i>
                                             <i>Quercus x porteri</i>
                                             <i>Quercus x pseudomargaretta</i>
                                                   [Quercus pseudomargarettiae]
                                                   [Vernicia x pseudomargarettiae]
                                             <i>Quercus x rehderi</i>
                                             <i>Quercus x richteri</i>
                                             <i>Quercus x riparia</i>
                                             <i>Quercus x robbinsii</i>
                                             <i>Quercus x rolfsii</i>
                                             <i>Quercus x rosacea</i>
                                             <i>Quercus x rudkinii</i>
                                             <i>Quercus x sargentii</i>
                                             <i>Quercus x schochiana</i>
                                             <i>Quercus x shirlingii</i>
                                             <i>Quercus x smallii</i>
                                             <i>Quercus x stelloides</i>
                                             <i>Quercus x sterilis</i>
                                             <i>Quercus x sterretii</i>
                                             <i>Quercus x sterrettii</i>
                                             <i>Quercus x subconvexa</i>
                                             <i>Quercus x subfalcata</i>
                                             <i>Quercus x subintegra</i>
                                             <i>Quercus x sublaurifolia</i>
                                             <i>Quercus x substellata</i>
                                             <i>Quercus x tharpii</i>
                                             <i>Quercus x tottenii</i>
                                             <i>Quercus x townei</i>
                                                   [Quercus dumosa var. kinseliae]
                                             <i>Quercus x undulata</i>
                                             <i>Quercus x vaga</i>
                                             <i>Quercus x venulosa</i>
                                             <i>Quercus x wagneri</i>
                                             <i>Quercus x walteriana</i>
                                                   [Quercus walterana]
                                             <i>Quercus x willdenowiana</i>
                                             <i>Quercus xalapensis</i>
                                                   [Quercus cupreata f. brachystachys]
                                                   [Quercus cupreata f. serrata]
                                                   [Quercus tenuiloba f. gracilis]
                                                   [Quercus tenuiloba f. hirsuta]
                                                   [Quercus tenuiloba]
                                             <i>Quercus xylina</i>
                                             <i>Quercus × alvordiana</i>
                                             <i>Quercus × asheana</i>
                                             <i>Quercus × auzandri</i>
                                             <i>Quercus × avellaniformis</i>
                                             <i>Quercus × beadlei</i>
                                                   [Quercus x beadlei]
                                             <i>Quercus × bebbiana</i>
                                                   [Quercus bebbiana]
                                                   [Quercus beebiana]
                                                   [Quercus x bebbiana]
                                             <i>Quercus × benderi</i>
                                             <i>Quercus × bimundorum</i>
                                             <i>Quercus × bushii</i>
                                                   [Quercus bushii]
                                                   [Quercus x bushii]
                                             <i>Quercus × caduca</i>
                                             <i>Quercus × columnaris</i>
                                             <i>Quercus × deamii</i>
                                                   [Quercus deamii]
                                                   [Quercus x deamii]
                                             <i>Quercus × dysophylla</i>
                                                   [Quercus esperanzae]
                                                   [Quercus fournieri]
                                                   [Quercus hahnii]
                                             <i>Quercus × exacta</i>
                                                   [Quercus x exacta]
                                             <i>Quercus × fernowii</i>
                                                   [Quercus fernowii]
                                                   [Quercus x fernowii]
                                             <i>Quercus × fontana</i>
                                                   [Quercus x fontana]
                                             <i>Quercus × fontqueri</i>
                                             <i>Quercus × garlandensis</i>
                                             <i>Quercus × hawkinsiae</i>
                                                   [Quercus hawkinsiae]
                                                   [Quercus jackiana]
                                                   [Quercus porteri]
                                                   [Quercus x hawkinsiae]
                                             <i>Quercus × hispanica</i>
                                             <i>Quercus × jackiana</i>
                                                   [Quercus x jackiana]
                                             <i>Quercus × leana</i>
                                                   [Quercus leana]
                                                   [Quercus x leana]
                                             <i>Quercus × macdonaldii</i>
                                             <i>Quercus × morehus</i>
                                             <i>Quercus × morisii</i>
                                             <i>Quercus × numidica</i>
                                             <i>Quercus × palaeolithicola</i>
                                                   [Quercus x palaeolithicola]
                                             <i>Quercus × pauciloba</i>
                                             <i>Quercus × runcinata</i>
                                                   [Quercus runcinata]
                                                   [Quercus x runcinata]
                                             <i>Quercus × sargentii</i>
                                             <i>Quercus × saulii</i>
                                                   [Quercus saulii]
                                                   [Quercus x saulii]
                                             <i>Quercus × schochiana</i>
                                             <i>Quercus × schuettei</i>
                                                   [Quercus schuettei]
                                                   [Quercus x schuettei]
                                             <i>Quercus × sternbergii</i>
                                             <i>Quercus × subconvexa</i>
                                             <i>Quercus × subfalcata</i>
                                             <i>Quercus × tingitana</i>
                                             <i>Quercus × tridentata</i>
                                                   [Quercus x tridentata]
                                             <i>Quercus × warburgii</i>
                                             <i>Quercus ×beadlei</i>
                                             <i>Quercus ×beckyae</i>
                                             <i>Quercus ×byarsii</i>
                                             <i>Quercus ×deamii</i>
                                             <i>Quercus ×dysophylla</i>
                                             <i>Quercus ×egglestonii</i>
                                             <i>Quercus ×exacta</i>
                                             <i>Quercus ×hastingsii</i>
                                             <i>Quercus ×hillii</i>
                                             <i>Quercus ×humidicola</i>
                                             <i>Quercus ×introgressa</i>
                                             <i>Quercus ×jolonensis</i>
                                             <i>Quercus ×joorii</i>
                                             <i>Quercus ×megaleia</i>
                                             <i>Quercus ×neopalmeri</i>
                                             <i>Quercus ×nessiana</i>
                                             <i>Quercus ×rehderi</i>
                                             <i>Quercus ×robbinsii</i>
                                             <i>Quercus ×runcinata</i>
                                                   [Quercus rubra var. runcinata]
                                             <i>Quercus ×sterrettii</i>
                                             <i>Quercus ×subfalcata</i>
                                             <i>Quercus ×undulata</i>
                                                   [Quercus ×undulata var. pedunculata]
                                             <i>Quercus ×wagneri</i>
                                     <i>Trigonobalanus</i>
                                             <i>Trigonobalanus excelsa</i>
                                                   [Colombobalanus excelsa]

Problematic Rooting (213028)
               Quercus calophylla x Quercus crassifolia

Problematic Rooting (46926)
               Quercus glaucoides x Quercus microphylla

Problematic Rooting (67815)
                                               <i>Quercus prinus var. pumila</i>