Psoralea lanceolata, Pursh. Perennial herb, much branched, glabrous or nearly so, densely dark-glandular, 1-2 ft. high: lfts. sessile, bright green, entire, linear or oblance- olate: fls. bluish white, 3 lines long. June, July. Kans. to W. Canada west to Wash., etc. B.B. 2:281.