Lemna trisulca Linnaeus. Section: Lemna. Star Duckweed, Ivy-leaved Duckweed. Hab: Still to slowly moving waters of ponds, lakes, beaver ponds, and swamps, calcareous springs. Dist: Widespread in the Northern Hemisphere; scattered in the Southern Hemisphere.

Origin/Endemic status: Native

Synonymy: = AqW, C, F, FNA22, G, GrPl, Il, K1, K3, K4, Mi, NE, NY, Pa, S, S13, Tn, Tx, Va, W, Landolt (1980), Landolt (1986)

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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: 6