Proserpinaca palustris Linnaeus. Common Mermaid-weed. Phen: Jun-Oct. Hab: Wet places, swamp forests. Dist: Throughout e. North America and south to the Caribbean; Mexico (CHO, VER), Central and South America.

Origin/Endemic status: Native

Taxonomy Comments: Various varieties and an additional species have sometimes been recognized in this morphologically variable species (see synonymy).

Synonymy: = Ar, Bah, Fl2, FNA10, GW2, Meso4.1, Mex, Mi, NE, NY, S13, Va, Crow & Hellquist (2000a); > Proserpinaca ×intermedia – NE; > Proserpinaca intermedia – C, F, G, K1, K3, K4, RAB, Tn, Catling (1998); > Proserpinaca palustris L. – K4, RAB, S, Tn; > Proserpinaca palustris L. var. amblyogona – C, F, G, K1, NcTx, Tx, Catling (1998); > Proserpinaca palustris L. var. crebra – C, F, G, Il, K1, Pa, Tat, WV, Catling (1998); > Proserpinaca palustris L. var. palustris – C, F, G, Il, K1, Pa, Catling (1998); > Proserpinaca platycarpa Small – S

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL (taxonomic lump from wetland indicator species)
• Eastern Mountains and Piedmont: OBL (taxonomic lump from wetland indicator species)
• Great Plains: OBL
• Midwest: OBL
• Northcentral & Northeast: OBL (taxonomic lump from wetland indicator species)

Heliophily: 5