Asclepias purpurascens Linnaeus. Purple Milkweed. Phen: (Apr-) May-Jul. Hab: Openings in moist bottomlands and swamp forests, prairies and meadows (rich, wet to mesic), woodlands, perhaps mostly on soils derived from mafic or calcareous rocks. Dist: NH and s. ON west to WI, IA, and KS, south to NC, nw. TN (Chester, Wofford, & Kral 1997), KY, AR, and OK.
Origin/Endemic status: Native
Synonymy: = Ar, C, F, G, GrPl, Il, K1, K3, K4, Mi, Mo2, NE, NY, Ok, Pa, RAB, S, Tn, Tx, Va, W, Woodson (1954)
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