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Home >> Checklist: Ontario County >> Previous version of Key >> Identification Key (new version): Ontario County Filter/Display Options Family/Genus Filter: Sort by: Display Common Names Display images Plant habit trees shrubs vines / lianas herbaceous grass-like ferns & allies cactus-like / succulents aquatic & OBL wetland species special groups arums composites legumes milkweeds mints orchids spurges dicots monocots longevity annual or biennial perennial armature unarmed armed leaves/twigs aromatic when crushed without marked odor clearly odiferous Leaves arrangement/phyllotaxy basal alternate opposite whorled fascicled/clustered along stem blade division all simple deeply lobed or divided some or all fully compound Flower ovaries/pistils per flower 1 2-5 more than 5 Fruit or Cone fruit consistency at maturity dry/leathery fleshy Ontario County Species Count: 518 Alismataceae Sagittaria latifolia Sagittaria rigida Amaranthaceae Amaranthus retroflexus Chenopodium album Chenopodium strictum Dysphania ambrosioides Anacardiaceae Rhus aromatica Apiaceae Anthriscus sylvestris Conioselinum chinense Conium maculatum Daucus carota Sium suave Taenidia integerrima Zizia aurea Apocynaceae Apocynum androsaemifolium Asclepias incarnata Aquifoliaceae Ilex verticillata Araceae Lemna trisulca Peltandra virginica Araliaceae Panax quinquefolius Asparagaceae Convallaria majalis Aspleniaceae Asplenium platyneuron Asplenium rhizophyllum Asplenium trichomanes Asteraceae Achillea ageratum Ageratina altissima Ageratum altissima Ambrosia artemisiifolia Anaphalis margaritacea Anthemis cotula Centaurea cyanus Centaurea jacea Centaurea nigrescens Centaurea stoebe Cirsium arvense Cirsium discolor Cirsium muticum Cirsium vulgare Crepis tectorum Crepis vesicaria Doellingeria umbellata Dyssodia papposa Erigeron annuus Erigeron strigosus Eupatorium album Eupatorium perfoliatum Eurybia divaricata Eurybia macrophylla Euthamia graminifolia Eutrochium fistulosum Eutrochium maculatum Helianthus divaricatus Helianthus giganteus Megalodonta beckii Pilosella floribunda Senecio vulgaris Smallanthus uvedalius Solidago altissima Solidago arguta Solidago bicolor Solidago canadensis Solidago juncea Solidago nemoralis Solidago ohioensis Solidago rugosa Solidago ulmifolia Sonchus arvensis Symphyotrichum cordifolium Symphyotrichum ericoides Symphyotrichum laeve Symphyotrichum lateriflorum Symphyotrichum novae-angliae Symphyotrichum novi-belgii Symphyotrichum prenanthoides Symphyotrichum urophyllum Tragopogon pratensis Tussilago farfara Xanthium strumarium Athyriaceae Deparia acrostichoides Homalosorus pycnocarpos Balsaminaceae Impatiens capensis Impatiens fulva Impatiens pallida Berberidaceae Berberis julianae Berberis sargentiana Berberis vulgaris Caulophyllum giganteum Caulophyllum thalictroides Jeffersonia diphylla Podophyllum peltatum Betulaceae Alnus glutinosa Boraginaceae Anchusa azurea Cynoglossum officinale Heliotropium peruvianum Lithospermum latifolium Myosotis scorpioides Symphytum officinale Brassicaceae Alyssum alyssoides Cardamine diphylla Lepidium campestre Sisymbrium altissimum Campanulaceae Campanula rapunculoides Cannabaceae Celtis occidentalis Humulus lupulus Caprifoliaceae Dipsacus fullonum Lonicera canadensis Lonicera morrowii Triosteum aurantiacum Caryophyllaceae Cerastium arvense Cerastium glomeratum Dianthus armeria Gypsophila repens Silene flos-cuculi Stellaria longifolia Celastraceae Celastrus orbiculatus Parnassia glauca Characeae Chara contraria Convolvulaceae Cuscuta gronovii Cornaceae Cornus amomum Cornus florida Cornus obliqua Cornus racemosa Cornus rugosa Crassulaceae Sedum acre Cucurbitaceae Echinocystis lobata Sicyos angulatus Cupressaceae Juniperus chinensis Thuja occidentalis Cyperaceae Carex albicans Carex albursina Carex alopecoidea Carex annectens Carex aquatilis Carex aurea Carex blanda Carex brunnescens Carex bullata Carex buxbaumii Carex canescens Carex cephalophora Carex communis Carex comosa Carex crinita Carex cristatella Carex eburnea Carex emoryi Carex exilis Carex formosa Carex granularis Carex grisea Carex hystericina Carex interior Carex intumescens Carex lacustris Carex laxiflora Carex lupulina Carex lurida Carex microglochin Carex ormostachya Carex pallescens Carex pensylvanica Carex platyphylla Carex praegracilis Carex prasina Carex pseudocyperus Carex retrorsa Carex rosea Carex scoparia Carex sparganioides Carex stipata Carex stricta Carex tetanica Carex trichocarpa Carex vulpinoidea Cyperus strigosus Eleocharis obtusa Eleocharis tuberculosa Eriophorum viridicarinatum Rhynchospora capillacea Rhynchospora capitellata Schoenoplectus acutus Schoenoplectus pungens Schoenoplectus tabernaemontani Scirpus atrocinctus Scirpus cyperinus Scirpus hattorianus Scirpus pedicellatus Cystopteridaceae Cystopteris bulbifera Cystopteris diaphana Dennstaedtiaceae Dennstaedtia punctilobula Pteridium aquilinum Dryopteridaceae Dryopteris carthusiana Dryopteris celsa Dryopteris clintoniana Dryopteris goldieana Dryopteris intermedia Dryopteris marginalis Polystichum acrostichoides Elaeagnaceae Elaeagnus umbellata Equisetaceae Equisetum arvense Equisetum fluviatile Equisetum hyemale Equisetum sylvaticum Ericaceae Arctostaphylos uva-ursi Chamaedaphne calyculata Gaultheria procumbens Gaylussacia baccata Kalmia buxifolia Moneses uniflora Monotropa uniflora Rhododendron roseum Vaccinium angustifolium Vaccinium corymbosum Euphorbiaceae Euphorbia vermiculata Fabaceae Amphicarpaea bracteata Astragalus neglectus Crotalaria sagittalis Desmodium canescens Desmodium rotundifolium Gleditsia triacanthos Gymnocladus dioicus Hylodesmum nudiflorum Lathyrus myrtifolius Lathyrus ochroleucus Lathyrus tuberosus Lespedeza stuevei Melilotus albus Strophostyles helvola Trifolium hybridum Vicia americana Vicia sativa Vicia villosa Fagaceae Castanea dentata Castanea mollissima Fagus grandifolia Quercus acutissima Quercus macrocarpa Quercus rubra Quercus velutina Gentianaceae Gentiana clausa Gentianopsis crinita Gentianopsis virgata Geraniaceae Geranium maculatum Geranium pusillum Grossulariaceae Ribes americanum Ribes rubrum Haloragaceae Myriophyllum sibiricum Myriophyllum spicatum Myriophyllum verticillatum Hamamelidaceae Hamamelis virginiana Hydrocharitaceae Najas flexilis Najas minor Hypericaceae Hypericum punctatum Iridaceae Iris pseudacorus Iris versicolor Sisyrinchium montanum Juglandaceae Carya ovata Juglans nigra Juncaceae Juncus acuminatus Juncus bufonius Juncus effusus Juncus tenuis Luzula luzuloides Luzula multiflora Lamiaceae Clinopodium alpinum Collinsonia anisata Leonurus cardiaca Lycopus americanus Lycopus uniflorus Lycopus × sherardii Melissa officinalis Mentha arvensis Mentha spicata Mentha × piperita Monarda didyma Satureja hortensis Scutellaria galericulata Scutellaria lateriflora Lauraceae Sassafras albidum Lentibulariaceae Utricularia intermedia Utricularia macrorhiza Linaceae Linum virginianum Lycopodiaceae Dendrolycopodium obscurum Huperzia lucidula Lythraceae Decodon verticillatus Magnoliaceae Liriodendron tulipifera Malvaceae Tilia americana Melanthiaceae Trillium grandiflorum Myricaceae Morella caroliniensis Myrica cerifera Oleaceae Chionanthus virginicus Forsythia suspensa Fraxinus pennsylvanica Ligustrum vulgare Onagraceae Epilobium coloratum Epilobium leptophyllum Epilobium strictum Ophioglossaceae Botrychium matricariifolium Botrypus virginianus Orchidaceae Cypripedium parviflorum Epipactis helleborine Galearis spectabilis Platanthera hyperborea Pogonia ophioglossoides Spiranthes lucida Triphora trianthophoros Orobanchaceae Agalinis purpurea Buchnera americana Epifagus virginiana Pedicularis canadensis Osmundaceae Osmunda spectabilis Papaveraceae Capnoides sempervirens Dicentra canadensis Papaver somniferum Penthoraceae Penthorum sedoides Phrymaceae Mimulus ringens Pinaceae Picea mariana Pinus sylvestris Pinus wallichiana Tsuga canadensis Plantaginaceae Cymbalaria muralis Linaria vulgaris Nuttallanthus canadensis Penstemon digitalis Veronica americana Veronica anagallis-aquatica Veronica arvensis Veronica officinalis Veronica peregrina Veronica persica Veronica polita Veronica scutellata Veronica serpyllifolia Veronica tournefortii Poaceae Agrostis capillaris Agrostis gigantea Alopecurus aequalis Andropogon gerardi Arrhenatherum elatius Bouteloua curtipendula Bromus latiglumis Calamagrostis canadensis Dichanthelium latifolium Dichanthelium villosissimum Digitaria cognata Echinochloa crus-galli Elymus riparius Elymus trachycaulus Eragrostis capillaris Eragrostis spectabilis Festuca ovina Glyceria acutiflora Glyceria borealis Glyceria canadensis Glyceria grandis Glyceria melicaria Glyceria septentrionalis Glyceria striata Holcus lanatus Lolium perenne Melica stricta Muhlenbergia glomerata Muhlenbergia mexicana Oryzopsis asperifolia Panicum nitidum Phalaris arundinacea Phleum pratense Poa annua Poa compressa Poa debilis Poa pratensis Poa saltuensis Puccinellia distans Schizachne purpurascens Setaria pumila Tridens flavus Polemoniaceae Phlox divaricata Polygalaceae Polygala senega Polygala verticillata Polygonaceae Fallopia convolvulus Persicaria amphibia Persicaria careyi Persicaria hydropiper Persicaria maculosa Persicaria pensylvanica Persicaria punctata Persicaria virginiana Polygonum aviculare Polygonum erectum Reynoutria × bohemica Rumex altissimus Rumex obtusifolius Rumex verticillatus Pontederiaceae Heteranthera dubia Potamogetonaceae Potamogeton amplifolius Potamogeton bupleuroides Potamogeton crispus Potamogeton epihydrus Potamogeton filiformis Potamogeton foliosus Potamogeton friesii Potamogeton gramineus Potamogeton illinoensis Potamogeton natans Potamogeton nodosus Potamogeton perfoliatus Potamogeton praelongus Potamogeton pusillus Potamogeton richardsonii Potamogeton spirillus Potamogeton vaseyi Potamogeton zosteriformis Stuckenia pectinata Primulaceae Lysimachia arvensis Lysimachia ciliata Lysimachia nummularia Lysimachia quadriflora Lysimachia quadrifolia Lysimachia terrestris Lysimachia thyrsiflora Primula intercedens Ranunculaceae Actaea racemosa Anemone acutiloba Anemone americana Anemone virginiana Clematis virginiana Ranunculus abortivus Ranunculus allegheniensis Ranunculus bulbosus Ranunculus pennsylvanicus Ranunculus recurvatus Thalictrum amphibolum Thalictrum dioicum Rosaceae Agrimonia gryposepala Agrimonia striata Amelanchier laevis Argentina anserina Aronia melanocarpa Crataegus calpodendron Crataegus dodgei Crataegus harryi Crataegus pedicellata Crataegus perjucunda Crataegus pruinosa Fragaria vesca Fragaria virginiana Geum aleppicum Geum canadense Geum rivale Malus coronaria Malus sieversii Potentilla simplex Prunus mahaleb Prunus salicina Prunus virginiana Rubus hispidus Rubus odoratus Rubiaceae Cephalanthus occidentalis Galium lanceolatum Galium mollugo Galium obtusum Galium pilosum Galium tinctorium Rutaceae Zanthoxylum americanum Salicaceae Populus balsamifera Populus tremuloides Salix alba Salix bebbiana Salix candida Salix eriocephala Salix interior Salix × fragilis Sapindaceae Acer nigrum Acer pensylvanicum Acer pseudoplatanus Acer rubrum Acer saccharinum Acer saccharum Acer spicatum Sarraceniaceae Sarracenia purpurea Sarracenia rubra Saxifragaceae Mitella diphylla Tiarella cordifolia Scrophulariaceae Buddleja davidii Scrophularia marilandica Verbascum thapsus Solanaceae Capsicum annuum Capsicum cerasiforme Datura suaveolens Physalis heterophylla Solanum campylacanthum Solanum carolinense Solanum dulcamara Solanum incanum Solanum physalifolium Solanum sarrachoides Thelypteridaceae Phegopteris connectilis Phegopteris hexagonoptera Thelypteris noveboracensis Thelypteris palustris Thelypteris phegopteris Typhaceae Sparganium americanum Sparganium angustifolium Sparganium eurycarpum Typha latifolia Ulmaceae Ulmus rubra Ulmus thomasii Urticaceae Boehmeria cylindrica Viburnaceae Sambucus canadensis Viburnum acerifolium Viburnum lentago Viburnum trilobum Violaceae Viola affinis Viola labradorica Viola sororia Viola subsinuata Vitaceae Vitis riparia Woodsiaceae Woodsia ilvensis
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