128 LEGUMlNOSiE. . i.DPi.Nis. 



L. argenteus Purslt Fl. 468. Silvefy canescent : stems erect or ascend- 

 ing cespitose 1—2 feet high, slender and branching: pubescence minute, 

 silky, appressed: stipules small: leaflets 5--8, linear-lanceolate, 1-2 

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

 ioles- racemes 2—6 inches long, nearly sessile: flowers subvertieillate 

 or scattered; pedicels 1—2 lines long; calyx campanulate, 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; 

 ovules 3—5. Plains of the Columbia and Snake rivers. 



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

 short and dense : bracts subpersistent ; flowers subvertieillate, short- 

 peduneled : calyx with the upper lip deeply cleft, the lower o- toothed, > 

 keel oiliate : ovules 3 — 6 : pods hairy, 1 — 4-8eeded. 



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

 tose: pubescence dense, villous, appressed: leaflets 5—7, oblanceolate, 

 6—12 lines long, acute, the petioles thrice longer: racemes sessile, 

 shorter than the leaves: bracts setaceous, exceeding the calyx; petals 

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

 pods 6 lines long. Eastern Oregon to Colorado. 



L. aridus Dougl. Bot. Keg. xv, t. 124. Stems cespitose, 2—3 inches 

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

 appressed: leaflets 5—7, oblanceolate, acute, 9—12 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 sandy or gravelly places, 

 Washington to California. 



L. Lobbii Gray in Herb. Watson 1. c. 533. L. nridiis var. Lobbii Wat- 

 son. Stems cespitose, 1—3 inches long, leafy: pubescence silky, ap- 

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

 ioles 2—3 times longer: racemes dense, 1 — 2 inches long, peduncles 

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

 of the calyx deeply bifld, the lower slightly trifld; petals purple, the 

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

 California. 



L. miniiuus Dougl. Hook. Fl. i, 163. Appressed silky-villous, 3—6 

 Inches high: leaflets 5—9, obovate or lanceolate, 3—8 lines long, mostly 

 acutish, the petioles ^—i 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. 



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

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

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

 less villous above, .3—9 lines long, the petioles usuallv elongated: ped- 

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

 the leaves: flowers pui-ple, 3—4 lines long: calyx narrowly lohed 

 1—3 lines long; upper petal glabrous, keel oiliate: 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 2—6 Inches long, 

 from a spreading branched woody caudex, very leafy: pubescence 

 dense, villous, appressed: leaflets 7—10 obovate. obtuse,"4— 6 lines long, 

 tlie petioles 1—2 times longer: racemes very short; peduncles equall- 

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



