Argemone polyanthemos (Fedde) G.B. Ownbey. White Prickly-poppy. Phen: Apr-Jul. Hab: Prairies, fields, disturbed areas. Dist: ND, SK, and MT south to e. TX, AZ, and NM.
Origin/Endemic status: Native
Synonymy: = FNA3, GrPl, K3, K4, NcTx, Tx; = Argemone intermedia Sweet – F, misapplied
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