Psoralidium purshii

Psoralidium purshii (Vail) Rydberg
Lotodes ellipUcum latifolium Kuntze Rev Gen 193 1891.
Psoralen Purshii Vail, Bull. Torrey Club 21: 94 ^i.
Psoralea lanceolata Purshii Piper .Piper & Beattie, Fl. Mouse Reg. UK. 1901 .
Psoi-o/eo touceoiata scabra Piper, Contr. U. S. Nat. Herb. 11. 364. 1906.
A perennial, with a creeping rootstock; stem adsurgent or erect, glandular-punctate and strigose 1-6 dm. high; leaves digitately 3-foliolate; stipules lanceolate or subulate, 4-7 mm. long, leaflets 1 5-4 cm. long, obovate or broadly oblanceolate or those of the upper leaves narrower, etu or mucronate at the apex, sparingly strigose and conspicuously punctate peduncles S em long; racemes rather dense, 1-2 cm. long; bracts minute ; calyx 2 mm. long, strigose and ciliate on the margin, scarcely one third as long as the tube; corolla about 5 mnL long white; banner rounded-obovate ; pod globose, fully 5 mm. long, densely long-villous, glandular-warty, seed globose, light-brown.
Type locality: Empire City, Nevada.
Distribution; Idaho and Washington to Wyoming and Arizona.