Apocynum androsaemifolium Linnaeus. Spreading Dogbane. Phen: Jun-Aug; Sep-Oct. Hab: Forests, woodlands, prairies, flood-scour, roadsides, pastures. Dist: NL (Newfoundland) to BC south to w. NC, nw. SC (Bradley et al. [in prep.]), c. GA, TX, AZ, and n. Mexico (CHH, COA, SON).

Origin/Endemic status: Native

Synonymy: = Ar, C, F, GrPl, K1, K3, K4, Mex, Mi, Mo2, NE, NY, Pa, RAB, S, Tn, Tx, Va, W; > Apocynum androsaemifolium L. var. androsaemifolium – G, Il, Woodson (1930); > Apocynum androsaemifolium L. var. glabrum Macoun – G; > Apocynum androsaemifolium L. var. incanum A.DC. – Il, Woodson (1930)

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