Vicia ludoviciana Nuttall var. occidentalis (Shinners) B.L. Turner. Western Louisiana Vetch. Phen: (Late Feb-) Mar-Apr (-early May); (late Mar-) May-Jun (-Aug). Hab: Woodlands, grasslands, disturbed areas. Dist: W. OK, CO, sw. UT, s. NV south to s. TX, NM, AZ, se. CA, and Mexico.
Origin/Endemic status: Native
Synonymy: = Vicia exigua Torr. & A.Gray – GrPl, Tx; = Vicia ludoviciana Nutt. ssp. ludoviciana (race 4) – Lassetter (1984); = Vicia ludoviciana Nutt. ssp. ludoviciana (race 4, producta) – Isely (1998); < Vicia ludoviciana Nutt. – Mex; < Vicia ludoviciana Nutt. ssp. ludoviciana – K1, K3, K4, SE3
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