128 LEGUM1NOSJE. LUPIXUS. 



I*, argenteus Pursh Fl. 468 . Silvery canescent : stems erect or ascend- 

 ing, cespitose,! 2 feet high, slender and branching: pubescence minute, 

 silky, appressed: stipules small: leaflets 58, linear-lanceolate, 12 

 inches long, acute, smooth above or nearly so, about equalling the pet- 

 ioles: racemes 26 inches long, nearly sessile: flowers subverticillate 

 or scattered; pedicels 12 lines long; calyx eampanulate, gibbous but 

 not spurred at base, upper lip broad, 2-toothed, the lower subentire; 

 slightly longer; petals blue or cream-color, equal, 3 4 lines long, the 

 upper one very broad, naked or subpubescent, keel naked or subciliate; 

 ovuies 35. Plains of the Columbia and Snake rivers. 



* * * Dwarf, short stemmed, mostly cespitose : racemes mostly 

 short and derise: bracts subpersistent ; flowers subverticillate, short- 

 peduncled : calyx with tlie upper lip deeply cleft, the lower o- toothed, 

 keel ciliate: ovules o 6: pods hairy, 1 4-seeded. 



L. cespitosus Siitt. T. & G. Fl. i, 376. Stems very shor, and cespi- 

 tose: pubescence dense, villous, appressed: leaflets 57, oblauceolate, 

 612 lines long, acute, the petioles thrice longer: racemes sessile, 

 shorter than the leave.?: bracts setaceous, exceeding the calyx; petals 

 pale blue, equal, 3 4 lines long, the upper one narrow, 2 lines broad: 

 pods 6 lines long. Eastern Oregon to Colorado. 



L. aridns Dougl. Bot. Reg. xv, t. 124. Stenis cespitose, 23 inches 

 long, with rather long internodes: pubescence silky-hirsute, fulvous, 

 appressed: leaflets 57, oblauceolate, acute, 912 lines long, the pet- 

 ioles 3 4 times longer: racemes dense, 2 3 inches long, the peduncles 

 shorter than the leaves: bracts nearly equalling the calyx: upper lip 

 of the calyx shortly toothed, the lower subentire petals purple, 5 lines 

 long, nearly twice longer than the calyx, the elliptical upper one usual- 

 ly shorter: pods 5 lines long, very hairy. In mainly or gravelly places, 

 Washington to California. 



It. Lobbii Gray in Herb. Watson 1. c. 533. L. aridii* var. Lohbii Wat- 

 son. Stems cespitose, 13 inches long, leafy: pubescence silky, ap- 

 pressed: leaflets 5 7, oblanceolate to obovate, 6 8 lines long, the pet- 

 ioles 23 times longer: racemes, dense, 12 inches long, peduncles 

 shorter than the leaves: bracts nearly equalling the calyx: upper lip 

 of the calyx deeply bifid, the lower slightly trifid; petals purple, the 

 upper one orbicular. In alluvial prairies and hillsides, Washington to 

 California. 



L. minimus Dougl. Hook. Fl. i, 163. Appressed silky-villous, 36 

 inches high: leaflets 59, obovate or lanceolate, 38 lines long, mostly 

 acutish, the petioles 3 4 times longer: pedicels equalling or exceeding 

 the leaves: bracts short, deciduous: calyx half the length of the 

 petals, upper lip deeply bifid; petals purple ,4 5 lines long, equal, the 

 upper one orbicular. Eastern Oregon and Washington. 



Ij. Cusickii Watson Proc. Am. Acad. xxii, 469. Canescent through- 

 out with soft appressed hairs: stems 2 4 inches high, much branched 

 from the biennial or perennial root: leaflets 5 8 oblanceolate, slightly 

 less villous above, 3 9 lines long, the petioles usually elongated: ped- 

 uncles mostly very short, the loosely few-flowered racemes shorter than 

 the leaves: flowers purple, 3^4 lines long: calyx narrowly lobed 

 1 3 lines long: upper petal glabrous, keel ciliate: pods villous with 

 short appressed hairs, 2 3 seeded, 4 5 lines long. On sterile hillsides, 

 Union County, Oregon. 



!L. Breweri Gray Proc. Am. Acad. vi, 334. Stems 26 inches long, 

 from a spreading branched woody caudex, very leafy: pubescence 

 dense, villous, appressed: leaflets 710 obovate. obtuse, 4 6 lines long, 

 the petioles 12 times longer: racemes very short; peduncles equall- 

 ing the leaves: bracts short; lips of the calyx nearly equal, the upper 



