Euphorbia marginata Pursh. Phen: Jun-Nov. Hab: Upland sites (prairies, woodlands) over calcareous substrates; eastwards on roadsides and in disturbed areas. Dist: MN and MT south through the Great Plains to MO, TX, NM, and Mexico (CAM, COA, OAX, SLP, SIN, TAB, TAM, VER).
Origin/Endemic status: Native
Synonymy: = Ar, C, F, Fl2, FNA12, G, GrPl, Il, K1, K3, K4, Mex, Mi, NcTx, NE, NY, Pa, RAB, Tn, Tx, Va, WH3, WV, Govaerts, Frodin, & Radcliffe-Smith (2000); = Agaloma marginata (Pursh) Á.Löve & D.Löve; = Lepadena marginata (Pursh) Nieuwl. – S