Lemna obscura (Austin) Daubs. Section: Lemna. Little Duckweed. Hab: Still to slowly moving waters of ponds, lakes, beaver ponds, and swamps. Dist: NY west to MN and NE, south to s. FL, TX, Mexico, and the Bahamas.

Origin/Endemic status: Native

Synonymy: = AqW, Ar, Bah, ETx1, FNA22, Il, K1, K3, NcTx, Ok, Pa, Tat, Tn, Va, WH3, Landolt (1980), Landolt (1986), Spaulding et al (2019); < Lemna minor L. – C, F, G, GrPl, RAB

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL
• Eastern Mountains and Piedmont: OBL
• Great Plains: OBL
• Midwest: OBL
• Northcentral & Northeast: OBL

Heliophily: 7