Explore / Wetland gradient / Obligate wetland (OBL)
Wetland gradient
Obligate wetland (OBL)
Species USDA classifies as OBL — found in wetlands more than 99% of the time. Cattails, marsh marigold, the duckweeds. The canonical "this site is a wetland" indicators.
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Showing 1,451–1,500 of 1,999.
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Primula egaliksensis Wormsk. ex Hornem. PREGGreenland primrose · Primulaceae -
Primula incana M.E. Jones PRINsilvery primrose · Primulaceae -
Proserpinaca intermedia Mack. PRIN2intermediate mermaidweed · Haloragaceae -
Proserpinaca palustris L. PRPA3marsh mermaidweed · Haloragaceae -
Proserpinaca pectinata Lam. PRPEcombleaf mermaidweed · Haloragaceae -
Psilocarphus oregonus Nutt. PSOROregon woollyheads · Asteraceae -
Psilocarphus tenellus Nutt. PSTEslender woollyheads · Asteraceae -
Pteris grandifolia L. PTGRelephantleaf brake · Pteridaceae -
Ptilimnium capillaceum (Michx.) Raf. PTCAherbwilliam · Apiaceae -
Ptilimnium costatum (Elliott) Raf. PTCOribbed mock bishopweed · Apiaceae -
Ptilimnium nodosum (Rose) Mathias PTNOpiedmont mock bishopweed · Apiaceae -
Puccinellia andersonii Swallen PUANAnderson's alkaligrass · Poaceae -
Puccinellia distans (Jacq.) Parl. PUDIweeping alkaligrass · Poaceae -
Puccinellia fasciculata (Torr.) E.P. Bicknell PUFAsaltmarsh alkaligrass · Poaceae -
Puccinellia howellii J.I. Davis PUHOHowell's alkaligrass · Poaceae -
Puccinellia hultenii Swallen PUHUHulten's alkaligrass · Poaceae -
Puccinellia lucida Fernald & Weath. PULU2shining alkaligrass · Poaceae -
Puccinellia maritima (Huds.) Parl. PUMAseaside alkaligrass · Poaceae -
Puccinellia nutkaensis (J. Presl) Fernald & Weath. PUNUNootka alkaligrass · Poaceae -
Puccinellia nuttalliana (Schult.) Hitchc. PUNU2Nuttall's alkaligrass · Poaceae -
Puccinellia parishii Hitchc. PUPAbog alkaligrass · Poaceae -
Puccinellia phryganodes (Trin.) Scribn. & Merr. PUPHcreeping alkaligrass · Poaceae -
Puccinellia tenella (Lange) Holmb. ex A.E. Porsild PUTEtundra alkaligrass · Poaceae - Puccinellia wrightii (Scribn. & Merr.) Tzvelev PUWRWright's alkaligrass · Poaceae
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Quercus lyrata Walter QULYovercup oak · Fagaceae -
Quercus texana Buckley QUTENuttall oak · Fagaceae -
Raillardella pringlei Greene RAPRshowy raillardella · Asteraceae -
Ranunculus alismifolius Geyer ex Benth. RAALplantainleaf buttercup · Ranunculaceae -
Ranunculus ambigens S. Watson RAAMwaterplantain spearwort · Ranunculaceae -
Ranunculus aquatilis L. RAAQwhite water crowfoot · Ranunculaceae -
Ranunculus bonariensis Poir. RABOCarter's buttercup · Ranunculaceae -
Ranunculus cymbalaria Pursh RACYalkali buttercup · Ranunculaceae -
Ranunculus flabellaris Raf. RAFLyellow water buttercup · Ranunculaceae -
Ranunculus flammula L. RAFL2greater creeping spearwort · Ranunculaceae -
Ranunculus hederaceus L. RAHE2ivy buttercup · Ranunculaceae -
Ranunculus hydrocharoides A. Gray RAHYfrogbit buttercup · Ranunculaceae -
Ranunculus hyperboreus Rottb. RAHY2high northern buttercup · Ranunculaceae -
Ranunculus lapponicus L. RALALapland buttercup · Ranunculaceae -
Ranunculus laxicaulis (Torr. & A. Gray) Darby RALA2Mississippi buttercup · Ranunculaceae -
Ranunculus lobbii (Hiern.) A. Gray RALOLobb's buttercup · Ranunculaceae -
Ranunculus longirostris Godr. RALO2longbeak buttercup · Ranunculaceae -
Ranunculus macounii Britton RAMA2Macoun's buttercup · Ranunculaceae -
Ranunculus pallasii Schltdl. RAPA2Pallas' buttercup · Ranunculaceae -
Ranunculus pedatifidus Sm. var. affinis (R. Br.) L.D. Benson RAPEAnorthern buttercup · Ranunculaceae -
Ranunculus pensylvanicus L. f. RAPE2Pennsylvania buttercup · Ranunculaceae -
Ranunculus populago Greene RAPOpopular buttercup · Ranunculaceae -
Ranunculus pusillus Poir. RAPUlow spearwort · Ranunculaceae -
Ranunculus sceleratus L. RASC3cursed buttercup · Ranunculaceae -
Ranunculus sulphureus Sol. ex C.J. Phipps RASU2sulphur buttercup · Ranunculaceae -
Ranunculus trichophyllus Chaix RATRthreadleaf crowfoot · Ranunculaceae