A diffuse copiously branched prostrate perennial herb, with very flexuose stems 1-2 feet long, densely clothed with short spreading white pubescence. Stipules linear, 1-2 lines, spreading, persistent. Petioles 3-4 lines. Leaves 12-18 lines; leaflets 5-9, obovate-oblong, distinctly emarginate, 4-6 lines long, all distinctly stalked, side ones alternate. Racemes densely 20-30-flowered, at first conical, 1 in., finally 2-3 in. long, on peduncles that frequently exceed the leaves. Pedicels very short. Calyx 2 lines long, densely white-pubescent like the rest of the plant, the plumose setaceous teeth reaching down nearly to the base. Corolla bright violet, half as long again as the calyx, the standard finely pubescent on the back. Pod linear, straight, 6-9 lines long, 1/8 in. thick, finely grey-downy, 8-10-seeded.
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