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 1,851–1,900 of 1,999.
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Symphyotrichum elliottii (Torr. & A. Gray) G.L. Nesom SYEL2Marsh American-Aster · Asteraceae -
Symphyotrichum expansum (Poepp. ex Spreng.) G.L. Nesom SYEXsouthwestern annual saltmarsh aster · Asteraceae -
Symphyotrichum lanceolatum (Willd.) G.L. Nesom SYLA6white panicle aster · Asteraceae -
Symphyotrichum lentum (Greene) G.L. Nesom SYLE2Suisun Marsh aster · Asteraceae -
Symphyotrichum novi-belgii (L.) G.L. Nesom SYNO3New York aster · Asteraceae -
Symphyotrichum praealtum (Poir.) G.L. Nesom SYPR5willowleaf aster · Asteraceae -
Symphyotrichum puniceum (L.) Á. Löve & D. Löve SYPUpurplestem aster · Asteraceae -
Symphyotrichum squamatum (Spreng.) G.L. Nesom SYSQsoutheastern annual saltmarsh aster · Asteraceae -
Symphyotrichum subulatum (Michx.) G.L. Nesom SYSU5eastern annual saltmarsh aster · Asteraceae -
Symphyotrichum tenuifolium (L.) G.L. Nesom SYTE6perennial saltmarsh aster · Asteraceae -
Symplocarpus foetidus (L.) Salisb. ex W.P.C. Barton SYFOskunk cabbage · Araceae -
Synthyris ranunculina Pennell SYRA2Charleston Mountain kittentails · Scrophulariaceae -
Taxodium ascendens Brongn. TAASpond cypress · Cupressaceae -
Taxodium distichum (L.) Rich. TADI2bald cypress · Cupressaceae -
Tectaria coriandrifolia (Sw.) Underw. TECO3Hattie Bauer's halberd fern · Dryopteridaceae - Tectaria ×amesiana A.A. Eaton (pro sp.) [coriandrifolia × fimbriata] TEAMhalberd fern · Dryopteridaceae
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Thalassia testudinum Banks & Sol. ex Koenig THTE6turtlegrass · Hydrocharitaceae -
Thalia dealbata Fraser ex Roscoe THDEpowdery alligator-flag · Marantaceae -
Thalia geniculata L. THGE2bent alligator-flag · Marantaceae -
Thalictrum mirabile Small THMI4little mountain meadow-rue · Ranunculaceae -
Thelypteris interrupta (Willd.) K. Iwats. THIN2Willdenow's maiden fern · Thelypteridaceae -
Thelypteris palustris Schott THPAeastern marsh fern · Thelypteridaceae -
Thelypteris puberula (Baker) Morton THPUshowy maiden fern · Thelypteridaceae -
Thelypteris serrata (Cav.) Alston THSE3toothed latticevein fern · Thelypteridaceae -
Thelypteris simulata (Davenport) Nieuwl. THSI2bog fern · Thelypteridaceae -
Torreyochloa erecta (Hitchc.) Church TOERspiked false mannagrass · Poaceae -
Torreyochloa pallida (Torr.) Church TOPA6pale false mannagrass · Poaceae -
Toxicodendron vernix (L.) Kuntze TOVEpoison sumac · Anacardiaceae -
Trapa natans L. TRNAwater chestnut · Trapaceae -
Trepocarpus aethusae Nutt. ex DC. TRAE2whitenymph · Apiaceae -
Triadenum fraseri (Spach) Gleason TRFRFraser's marsh St. Johnswort · Clusiaceae -
Triadenum tubulosum (Walter) Gleason TRTUlesser marsh St. Johnswort · Clusiaceae -
Triadenum virginicum (L.) Raf. TRVI2Virginia marsh St. Johnswort · Clusiaceae -
Triadenum walteri (J.G. Gmel.) Gleason TRWAgreater marsh St. Johnswort · Clusiaceae -
Triantha glutinosa (Michx.) Baker TRGL5sticky tofieldia · Liliaceae -
Triantha racemosa (Walter) Small TRRA6coastal false asphodel · Liliaceae -
Trichocoronis rivularis A. Gray TRRI6Rio Grande bugheal · Asteraceae -
Trichomanes boschianum Sturm TRBOAppalachian bristle fern · Hymenophyllaceae -
Trichophorum alpinum (L.) Pers. TRAL7alpine bulrush · Cyperaceae -
Trichophorum cespitosum (L.) Hartm. TRCE3tufted bulrush · Cyperaceae -
Trichophorum pumilum (Vahl) Schinz & Thell. TRPU18Rolland's bulrush · Cyperaceae -
Trichostema austromontanum F.H. Lewis TRAUSan Jacinto bluecurls · Lamiaceae -
Trifolium amabile Kunth TRAM2Aztec clover · Fabaceae -
Trifolium bolanderi A. Gray TRBO3parasol clover · Fabaceae -
Triglochin concinna Burtt Davy TRCO19slender arrowgrass · Juncaginaceae -
Triglochin maritima L. TRMA20seaside arrowgrass · Juncaginaceae -
Triglochin palustris L. TRPA28marsh arrowgrass · Juncaginaceae -
Triglochin striata Ruiz & Pav. TRST16three-rib arrowgrass · Juncaginaceae -
Trollius laxus Salisb. TRLA14American globeflower · Ranunculaceae -
Tuctoria greenei (Vasey) J. Reeder TUGRawnless spiralgrass · Poaceae