:

:
Plant
  habit
   trees
   shrubs
   vines / lianas
   herbaceous
   ferns & allies
   grass-like
   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

Vascular Plant Flora of Patuxent Research Refuge

Bill Harms
Species Count: 1205

Acoraceae

Alismataceae

Altingiaceae

Amaranthaceae

Amaryllidaceae

Anacardiaceae

Annonaceae

Apiaceae

Apocynaceae

Aquifoliaceae

Araceae

Araliaceae

Aristolochiaceae

Asparagaceae

Asphodelaceae

Aspleniaceae

Asteraceae

Athyriaceae

Balsaminaceae

Berberidaceae

Betulaceae

Bignoniaceae

Blechnaceae

Boraginaceae

Brassicaceae

Cabombaceae

Cactaceae

Campanulaceae

Cannabaceae

Caprifoliaceae

Caryophyllaceae

Celastraceae

Ceratophyllaceae

Cistaceae

Clethraceae

Colchicaceae

Commelinaceae

Convolvulaceae

Cornaceae

Crassulaceae

Cucurbitaceae

Cupressaceae

Cyperaceae

Dennstaedtiaceae

Dioscoreaceae

Droseraceae

Dryopteridaceae

Ebenaceae

Elaeagnaceae

Equisetaceae

Ericaceae

Euphorbiaceae

Fabaceae

Fagaceae

Gentianaceae

Geraniaceae

Haloragaceae

Hamamelidaceae

Hydrangeaceae

Hydrocharitaceae

Hypericaceae

Hypoxidaceae

Iridaceae

Isoetaceae

Iteaceae

Juglandaceae

Juncaceae

Lamiaceae

Lardizabalaceae

Lauraceae

Lentibulariaceae

Liliaceae

Limnanthaceae

Linaceae

Linderniaceae

Lycopodiaceae

Lygodiaceae

Lythraceae

Magnoliaceae

Malvaceae

Melanthiaceae

Melastomataceae

Menyanthaceae

Molluginaceae

Moraceae

Myricaceae

Nartheciaceae

Nelumbonaceae

Nymphaeaceae

Nyssaceae

Oleaceae

Onagraceae

Ophioglossaceae

Orchidaceae

Orobanchaceae

Osmundaceae

Oxalidaceae

Papaveraceae

Passifloraceae

Paulowniaceae

Penthoraceae

Phrymaceae

Phytolaccaceae

Pinaceae

Plantaginaceae

Platanaceae

Poaceae

Podostemaceae

Polemoniaceae

Polygalaceae

Polygonaceae

Polypodiaceae

Pontederiaceae

Portulacaceae

Potamogetonaceae

Primulaceae

Pteridaceae

Ranunculaceae

Ricciaceae

Rosaceae

Rubiaceae

Salicaceae

Santalaceae

Sapindaceae

Saururaceae

Saxifragaceae

Scrophulariaceae

Selaginellaceae

Simaroubaceae

Smilacaceae

Solanaceae

Staphyleaceae

Taxaceae

Tetrachondraceae

Theaceae

Thelypteridaceae

Typhaceae

Ulmaceae

Urticaceae

Verbenaceae

Viburnaceae

Violaceae

Vitaceae

Xyridaceae