PSORALKA. LEGUMINO&E. 141 



L. Torreyi Greene 1. c. 146. Hosackia Torreyi Gray. Minutely pubes- 

 cent : stems rather slender, numerous, from a stout perennial root, 1-2 

 feet high, mostly simple: stipules triangular, a line or more long; leaflets 

 5-9, ohovate to narrowly oblanceolate or linear, densely pubescent be- 

 neaih, mostly obtuse, 0-12 lines long: peduncles exceeding the leaves; 

 bracts usually trifoliolate : umbels 5-7-rtowered : teeth of the puJ>escent 

 calyx subulate, about as long as the short campanulate tube ; petals 6 lines 

 long, the upper one bright yellow, the lateral ones and very obtuse keel 

 white or reddish: pods linear, 1-2 inches long, with an acuminate hooked 

 beak. In springs and ditches, southwestern Oregon t<> California. 



Tribe 5. (ialcyw. Bronn. (partly) T. <( (r. Fl . /. 2i),>. Erect 

 herbs, shrub*, or tree* in'th iixiiaUij mieqiiaV.y jn'nin.ite. seldom 

 Stipdlate leu re* and a.ciUnnj or trnniiifil. rfirnitoxr or spi- 

 cate inflorescence. Corotto papilionaceous, or otherwise irregu- 

 lar. Stamen* diadelphous or sometimes monadelphous. Porfs 

 Continuous, rarely icith trfiDxrerxe cellular partitions ..between the 

 seedSj but never separating i/itn joint*. l~eetted, several-seeded, de- 

 hiscent, or l*-&~tieeded n<l indehiscenl. Radicle incurred or in- 

 fle.refl. 



9 PSORALEA Roy en L. Gen. eel. 2, 358. 



Our species perennial herbs, the herbage punctate with dark 

 glandular dots with digitately or pinnately o-5-foliolate leaves 

 with entire leaflets and free stipules, and white or purple flowers 

 in axillary pedunculate spikes or racemes, mostly with mein- 

 branaceous deciduous bracts. Calyx campanulate. persistent. ">- 

 cleft, its teeth nearly equal, or the lower one longest, the two 

 upper ones often connate. Petals free from the stamens ; k-el 

 broad and obtuse above, united with the wings. Stamens usually 

 diadelphous, the upper one sometimes united with the others at 

 the base ; anthers uniform, often only 5 perfect. Pods ovate, 

 about as long as the calyx, 1-seeded, indehiscent. thick, often 

 wrinkled. 



* Leaves digitately 8-5-foliolate, rarely 7-foliolate. 



P. lanceolata Pursh. Fl. 475. Aromatic-glandular throughout : sterna 

 slender, 12-30 inches high, erect or assurgent, branched, glabrous or with 

 a few scattered hairs: stipules linear-lanceolate to setaceous, 3-H lines 

 long: petioles 1-2 inches long; leaves trifoliolate; leaflets 1-2 inches long, 

 linear-lanceolate to obovate, acute or obtuse, mucronate. glabrous or with 

 a few hairs: peduncles longer than the leaves ; inflorescence capitate, 

 small; bracts minute; flowers nearly white; calyx minutely hairy, the 

 lobes nearly equal, obtuse: pods globose, 3 lines long, light with conspicu- 

 ous large raised brown glands, nearly glabrous, beak small and erect : 

 seeds globose, brown. On sandy plains, Oregon and Washington to Iowa 

 and Arizona. 



P. Purshii Vail Bull. Torr. Club, xxi, 94. Glandular throughout; 

 stems assurgent 6-20 inches high or more, from a long slender rootstock, 

 glabrous or somewhat hirsute at base ; scales ovate, scarious: leaves 3- 

 foliocte ; stipules lanceolate, 3-4 lines long; leaflets 1-2 inches long, obo- 

 vate cuneate or elliptical, or the uppermost nearly lanceolate and often 

 much narrower, varying greatly in size and shape, retuse or mucronulate, 

 glandular, glabrous or with a few scattered white hairs : peduncles vary- 

 ing in length, rarely longer than the leaves: flowers scattered in slender 

 spikes or crowded in nearly capitate heads; bracts minute; lobes of the 



