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 1,351–1,400 of 1,999.
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Pluchea longifolia Nash PLLO2longleaf camphorweed · Asteraceae -
Pluchea odorata (L.) Cass. PLODsweetscent · Asteraceae -
Pluchea sagittalis (Lam.) Cabrera PLSA5wingstem camphorweed · Asteraceae -
Poa leptocoma Trin. POLE2marsh bluegrass · Poaceae -
Poa napensis Beetle PONANapa bluegrass · Poaceae -
Poa paludigena Fernald & Wiegand POPAbog bluegrass · Poaceae -
Poa reflexa Vasey & Scribn. ex Vasey POREnodding bluegrass · Poaceae -
Podostemum ceratophyllum Michx. POCE3hornleaf riverweed · Podostemaceae -
Pogogyne abramsii J.T. Howell POAB2San Diego mesamint · Lamiaceae -
Pogogyne douglasii Benth. PODO2Douglas' mesamint · Lamiaceae -
Pogogyne floribunda Jokerst POFL17profuseflower mesamint · Lamiaceae -
Pogogyne nudiuscula A. Gray PONUOtay mesamint · Lamiaceae -
Pogogyne ziziphoroides Benth. POZISacramento mesamint · Lamiaceae -
Pogonia ophioglossoides (L.) Ker Gawl. POOPsnakemouth orchid · Orchidaceae -
Polygala balduinii Nutt. POBA4Baldwin's milkwort · Polygalaceae -
Polygala brevifolia Nutt. POBR2littleleaf milkwort · Polygalaceae -
Polygala chapmanii Torr. & A. Gray POCH5Chapman's milkwort · Polygalaceae -
Polygala cruciata L. POCRdrumheads · Polygalaceae -
Polygala cymosa Walter POCYtall pinebarren milkwort · Polygalaceae -
Polygala ramosa Elliott PORA2low pinebarren milkwort · Polygalaceae -
Polygonum amphibium L. var. emersum Michx. POAMElongroot smartweed · Polygonaceae -
Polygonum argyrocoleon Steud. ex Kunze POAR5silversheath knotweed · Polygonaceae -
Polygonum arifolium L. POAR6halberdleaf tearthumb · Polygonaceae -
Polygonum bistortoides Pursh POBI6American bistort · Polygonaceae -
Polygonum glabrum Willd. POGL10denseflower knotweed · Polygonaceae -
Polygonum hirsutum Walter POHI3hairy smartweed · Polygonaceae -
Polygonum hydropiper L. POHYmarshpepper knotweed · Polygonaceae - Polygonum hydropiperoides Michx. POHY2swamp smartweed · Polygonaceae
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Polygonum lapathifolium L. POLA4curlytop knotweed · Polygonaceae -
Polygonum marinense T.R. Mert. & P.H. Raven POMA15Marin knotweed · Polygonaceae -
Polygonum meisnerianum Cham. & Schltdl. POME4branched tearthumb · Polygonaceae -
Polygonum minus Huds. POMI21pygmy smartweed · Polygonaceae - Polygonum persicaria L. POPE3spotted ladysthumb · Polygonaceae
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Polygonum punctatum Elliott var. punctatum POPUP4dotted smartweed · Polygonaceae -
Polygonum robustius (Small) Fernald POROstout smartweed · Polygonaceae -
Polygonum sagittatum L. POSA5arrowleaf tearthumb · Polygonaceae -
Polygonum setaceum Baldw. POSE6bog smartweed · Polygonaceae -
Polypogon elongatus Kunth POELstreambank rabbitsfoot grass · Poaceae -
Polypogon interruptus Kunth POIN7ditch rabbitsfoot grass · Poaceae -
Polypogon maritimus Willd. POMA10Mediterranean rabbitsfoot grass · Poaceae -
Polypogon monspeliensis (L.) Desf. POMO5annual rabbitsfoot grass · Poaceae -
Pontederia cordata L. POCO14pickerelweed · Pontederiaceae -
Ponthieva racemosa (Walter) C. Mohr PORA4hairy shadow witch · Orchidaceae -
Populus heterophylla L. POHE4swamp cottonwood · Salicaceae -
Porterella carnosula (Hook. & Arn.) Torr. POCA15fleshy porterella · Campanulaceae -
Potamogeton alpinus Balbis POAL8alpine pondweed · Potamogetonaceae -
Potamogeton amplifolius Tuck. POAM5largeleaf pondweed · Potamogetonaceae -
Potamogeton bicupulatus Fernald POBI9snailseed pondweed · Potamogetonaceae - Potamogeton clystocarpus Fernald POCLlittle aguja pondweed · Potamogetonaceae
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Potamogeton confervoides Rchb. POCO12Tuckerman's pondweed · Potamogetonaceae