Oxytropis lambertii Pursh var. articulata (Greene) Barneby. Purple Loco. Phen: Apr-Jun. Hab: Prairies. Dist: E. OK west to se. CO, south to sw. LA, c. TX, and nc. NM.
Origin/Endemic status: Native
Synonymy: = GrPl, K3, K4, Tx, Isely (1998); < Oxytropis lambertii Pursh – F, NcTx
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