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 1–50 of 1,999.
- Acaena exigua A. Gray ACEXliliwai · Rosaceae
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Acoelorraphe wrightii (Griseb. & H. Wendl.) H. Wendl. ex Becc. ACWR4Everglades palm · Arecaceae - Aconitum infectum Greene ACIN2Arizona monkshood · Ranunculaceae
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Acorus americanus (Raf.) Raf. ACAMsweetflag · Acoraceae -
Acorus calamus L. ACCA4calamus · Acoraceae -
Acrostichum aureum L. ACAU3golden leatherfern · Pteridaceae -
Acrostichum danaeifolium Langsd. & Fisch. ACDAinland leatherfern · Pteridaceae -
Aeschynomene pratensis Small AEPRmeadow jointvetch · Fabaceae -
Aeschynomene virginica (L.) Britton, Sterns & Poggenb. AEVI3Virginia jointvetch · Fabaceae -
Agalinis calycina Pennell AGCA7leoncita false foxglove · Scrophulariaceae -
Agalinis linifolia (Nutt.) Britton AGLI2flaxleaf false foxglove · Scrophulariaceae -
Agalinis maritima (Raf.) Raf. AGMA3saltmarsh false foxglove · Scrophulariaceae -
Agalinis obtusifolia Raf. AGOBtenlobe false foxglove · Scrophulariaceae - Agalinis paupercula (A. Gray) Britton AGPA12smallflower false foxglove · Scrophulariaceae
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Agarista populifolia (Lam.) W.S. Judd AGPO2Florida hobblebush · Ericaceae -
Agrostis aequivalvis (Trin.) Trin. AGAEarctic bentgrass · Poaceae -
Agrostis clavata Trin. AGCLclavate bentgrass · Poaceae -
Alisma gramineum Lej. ALGRnarrowleaf water plantain · Alismataceae -
Alisma lanceolatum With. ALLA2lanceleaf water plantain · Alismataceae -
Alisma subcordatum Raf. ALSUAmerican water plantain · Alismataceae -
Alisma triviale Pursh ALTR7northern water plantain · Alismataceae -
Allium madidum S. Watson ALMA6swamp onion · Liliaceae -
Allium validum S. Watson ALVAPacific onion · Liliaceae -
Alnus maritima (Marshall) Muhl. ex Nutt. ALMA7seaside alder · Betulaceae -
Alnus serrulata (Aiton) Willd. ALSE2hazel alder · Betulaceae -
Alopecurus aequalis Sobol. ALAEshortawn foxtail · Poaceae - Alopecurus geniculatus L. ALGE2water foxtail · Poaceae
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Alopecurus saccatus Vasey ALSA3Pacific foxtail · Poaceae -
Alternanthera paronychioides A. St.-Hil. ALPA17smooth joyweed · Amaranthaceae -
Alternanthera philoxeroides (Mart.) Griseb. ALPHalligatorweed · Amaranthaceae -
Alternanthera sessilis (L.) R. Br. ex DC. ALSE4sessile joyweed · Amaranthaceae -
Amaranthus australis (A. Gray) Sauer AMAUsouthern amaranth · Amaranthaceae -
Amaranthus cannabinus (L.) Sauer AMCA2tidalmarsh amaranth · Amaranthaceae -
Amaranthus floridanus (S. Watson) Sauer AMFL3Florida amaranth · Amaranthaceae -
Amaranthus tuberculatus (Moq.) Sauer AMTUroughfruit amaranth · Amaranthaceae -
Amerorchis rotundifolia (Banks ex Pursh) Hultén AMROroundleaf orchid · Orchidaceae -
Ammannia auriculata Willd. AMAU2eared redstem · Lythraceae -
Ammannia coccinea Rottb. AMCOvalley redstem · Lythraceae -
Ammannia latifolia L. AMLA3pink redstem · Lythraceae -
Ammannia robusta Heer & Regel AMRO3grand redstem · Lythraceae -
Ampelaster carolinianus (Walter) G.L. Nesom AMCA14climbing aster · Asteraceae -
Amphianthus pusillus Torr. AMPU7little amphianthus · Scrophulariaceae -
Andromeda polifolia L. ANPObog rosemary · Ericaceae -
Anemopsis californica (Nutt.) Hook. & Arn. ANCA10yerba mansa · Saururaceae -
Angelica atropurpurea L. ANATpurplestem angelica · Apiaceae -
Aniseia martinicensis (Jacq.) Choisy ANMA4whitejacket · Convolvulaceae -
Annona glabra L. ANGL4pond apple · Annonaceae -
Aponogeton distachyos L. f. APDICape pondweed · Aponogetonaceae -
Aquilegia eximia Van Houtte ex Planch. AQEXVan Houtte's columbine · Ranunculaceae -
Arctophila fulva (Trin.) Rupr. ex Andersson ARFU2pendantgrass · Poaceae