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 51–100 of 1,999.
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Arenaria paludicola B.L. Rob. ARPA7marsh sandwort · Caryophyllaceae -
Arethusa bulbosa L. ARBUdragon's mouth · Orchidaceae -
Argentina anserina (L.) Rydb. ARAN7silverweed cinquefoil · Rosaceae -
Argyroxiphium caliginis Forbes ARCA22eke silversword · Asteraceae -
Argyroxiphium grayanum (Hillebr.) O. Deg. ARGR5Hana Forest silversword · Asteraceae -
Arnoglossum sulcatum (Fernald) H. Rob. ARSU5Georgia Indian plantain · Asteraceae -
Aronia melanocarpa (Michx.) Elliott ARME6black chokeberry · Rosaceae -
Arthrocnemum subterminale (Parish) Standl. ARSU11Parish's glasswort · Chenopodiaceae -
Asarum lemmonii S. Watson ASLELemmon's wildginger · Aristolochiaceae -
Asclepias connivens Baldw. ASCO19largeflower milkweed · Asclepiadaceae -
Asclepias incarnata L. ASINswamp milkweed · Asclepiadaceae -
Asclepias lanceolata Walter ASLA2fewflower milkweed · Asclepiadaceae -
Asclepias perennis Walter ASPEaquatic milkweed · Asclepiadaceae -
Asclepias rubra L. ASRUred milkweed · Asclepiadaceae -
Astelia waialealae Wawra ASWA4Kauai pa'iniu · Liliaceae -
Astragalus leptaleus A. Gray ASLE9park milkvetch · Fabaceae -
Astragalus limnocharis Barneby ASLI3Cedar Breaks milkvetch · Fabaceae -
Astragalus pycnostachyus A. Gray ASPYmarsh milkvetch · Fabaceae -
Avicennia germinans (L.) L. AVGEblack mangrove · Verbenaceae -
Avicennia marina (Forssk.) Vierh. AVMA3gray mangrove · Verbenaceae -
Axonopus furcatus (Flueggé) Hitchc. AXFUbig carpetgrass · Poaceae -
Azolla caroliniana Willd. AZCACarolina mosquitofern · Azollaceae -
Azolla filiculoides Lam. AZFIPacific mosquitofern · Azollaceae -
Azolla microphylla Kaulf. AZMIMexican Mosquito Fern · Azollaceae -
Azolla pinnata R. Br. AZPIfeathered mosquitofern · Azollaceae -
Baccharis salicifolia (Ruiz & Pav.) Pers. BASA4mule-fat · Asteraceae -
Bacopa caroliniana (Walter) B.L. Rob. BACAblue waterhyssop · Scrophulariaceae -
Bacopa egensis (Poepp.) Pennell BAEGBrazilian waterhyssop · Scrophulariaceae -
Bacopa eisenii (Kellogg) Pennell BAEIGila River waterhyssop · Scrophulariaceae -
Bacopa innominata (G. Maza) Alain BAIN2tropical waterhyssop · Scrophulariaceae -
Bacopa monnieri (L.) Pennell BAMOherb of grace · Scrophulariaceae -
Bacopa repens (Sw.) Wettst. BAREcreeping waterhyssop · Scrophulariaceae -
Bacopa rotundifolia (Michx.) Wettst. BAROdisk waterhyssop · Scrophulariaceae -
Barbarea orthoceras Ledeb. BAORAmerican yellowrocket · Brassicaceae -
Bartonia paniculata (Michx.) Muhl. BAPA2twining screwstem · Gentianaceae -
Bartonia verna (Michx.) Raf. ex Barton BAVE2white screwstem · Gentianaceae -
Bassia hirsuta (L.) Asch. BAHI3hairy smotherweed · Chenopodiaceae -
Batis maritima L. BAMA5turtleweed · Bataceae -
Beckmannia syzigachne (Steud.) Fernald BESYAmerican sloughgrass · Poaceae -
Bergia texana (Hook.) Seub. ex Walp. BETETexas bergia · Elatinaceae -
Berula erecta (Huds.) Coville BEERcutleaf waterparsnip · Apiaceae -
Betula glandulosa Michx. BEGLresin birch · Betulaceae -
Betula pumila L. BEPU4bog birch · Betulaceae - Betula ×purpusii C.K. Schneid. [alleghaniensis × pumila] BEPU3birch · Betulaceae
- Betula ×sandbergii Britton [papyrifera × pumila] BESASandberg birch · Betulaceae
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Bidens aurea (Aiton) Sherff BIAUArizona beggarticks · Asteraceae -
Bidens beckii Torr. ex Spreng. BIBE2Beck's water-marigold · Asteraceae -
Bidens cernua L. BICEnodding beggartick · Asteraceae -
Bidens coronata (L.) Britton BICOcrowned beggarticks · Asteraceae -
Bidens eatonii Fernald BIEAEaton's beggarticks · Asteraceae