| Lathyrus polymorphus, Nutt. Prairie Vetchlinq. St. rather stout, usually low, glabrous or finely pubescent, erect, a little woody at the base: lfts. 3-6 pairs, scattered, narrowly oblong, acute, thick, 1-2 in. long; stipules narrowly acuminate: peduncle 2-6-fld., a little longer than the leaves; flowers purple, large. March-July. Grassy, alluvial plains, Colo, to New Mex. and Ariz. | | Lathyrus polymorphus, Nutt. Prairie Vetchlinq. St. rather stout, usually low, glabrous or finely pubescent, erect, a little woody at the base: lfts. 3-6 pairs, scattered, narrowly oblong, acute, thick, 1-2 in. long; stipules narrowly acuminate: peduncle 2-6-fld., a little longer than the leaves; flowers purple, large. March-July. Grassy, alluvial plains, Colo, to New Mex. and Ariz. |