468 FABACEAE 



upper 5 mm. long; corolla blue or purple, 9-10 mm. long. L. ovinus Greene. 

 Plains and hills: Wash. Ore. Ida. Alta. Jl-Au. 



65. L. erectus Renders. Cespitose perennial; stems 2.5-3.5 dm. high; 

 basal leaves many; leaflets 5-8, linear-oblong to narrowly oblanceolate, acute, 

 1.5-4 cm. long, appressed silky-canescent; cauline leaves 1-2; bracts persistent, 

 lanceolate to subulate, equalling the calyx; calyx silky; lips subequal; banner 

 obovate, silky, reflexed. Dry ground: Ida. Submont. Mont. Jl. 



66. L. lepidus Dougl. Densely cespitose perennial; stems 1-4 dm. high, 

 leafy mostly at the decumbent base; leaflets 7-9, oblanceolate, 1-3 cm. long, 

 silky but green, acute; racemes rather lax, 5-20 cm. long; bracts lance-subulate, 

 about equalling the buds; calyx silky-canescent; lips lanceolate, the lower 6 mm. 

 long, the upper slightly shorter; corolla about 1 cm. long, violet, whiter at the 

 base; legume 1.5-2 cm. long, 4-6-seeded. Meadows: B.C. Calif. Ida. 

 Submont. Je-Jl. 



67. L. psoraleoides Pollard. Perennial, with a cespitose caudex, sub- 

 acaulescent; stem 1-1.5 dm. high, densely villous with long white hairs; leaflets 

 5-7, oblanceolate, acute, 2-3 cm. long, long-villous; raceme dense, almost sessile, 

 scarcely surpassing the leaves; bracts linear, scarious; corolla about 1 cm. long, 

 violet-purple; banner shorter than the keel; legume 1.5 cm. long, few-seeded. 

 Gravelly soil: Colo. Submont. Au. 



68. L. candicans Rydb. Low cespitose perennial, densely white-silky 

 throughout; stems ascending, 1.5-2 dm. high; leaflets about 7, 1.5-2.5 cm. long, 

 oblanceolate, acute, mucronate, mostly conduplicate; raceme rather dense, 3-8 

 cm. long; calyx densely silky-villpus; lower lip about 6 mm., the upper 4 mm. 

 long; corolla dark blue; banner with a light brown spot, glabrous, about 7 mm. 

 long; wings about 9 mm. long; pod 3-^1-seeded. Dry hills and mountains: 

 Mont. Wyo. Submont, My. 



69. L. Evermannii Rydb. Perennial and densely cespitose; stems about 

 1.5 dm. high, slender, erect or ascending, leafy, appressed-hairy; leaflets oblance- 

 olate to linear-oblanceolate, 1-2.5 cm. long, densely canescent on both sides; 

 raceme very short-peduncled, dense and short; bracts lanceolate, short; flowers 

 6-7 mm. long; calyx with spreading hairs; lips ovate-lanceolate, the lower about 

 5 mm. long, the upper 4 mm. long; corolla purplish blue; banner with a light 

 spot, glabrous. Mountains: Ida. Wyo. Subalp. 



70. L. monticola Rydb. Stems numerous, 1-2 dm. high, grayish-strigose, 

 leafy; leaflets 7-9, narrowly oblanceolate, 2-4 cm. long, acute or acuminate, 

 grayish silky-strigose on both sides; racemes 3-6 cm., densely flowered; bracts 

 5-8 mm. long, subulate, equalling the calyx; calyx silky-villous; lower lip lance- 

 olate, 7 mm. long, the upper ovate, 2-toothed, 6 mm. long; flow r ers dark blue, 

 about 10 mm. long; petals subequal; banner with a light brown spot; legume 2 cm. 

 long, 4-6-seeded. Rocky places in the mountains: Mont. Wyo. Mont. 

 Subalp. Jl-Au. 



71. L. roseolus Rydb. Stems ascending or decumbent, about 1 dm. high, 

 sparingly strigose; leaflets about 7, narrowly linear-oblanceolate, acute, 1-2 cm. 

 long, sparingly silky, short-strigose; raceme 2~ 4 cm. long; bracts subulate, 

 shorter than the bucls; calyx with short spreading hairs; lips broadly lanceolate, 

 subequal, 5-6 mm. long; corolla nearly white, tinged with rose; pod perhaps 1.5 

 cm. long. Mountains: Wyo. Mont. 



72. L. caespitosus Nutt. Cespitose, almost stemless; leaflets 5-7, oblance- 

 olate, 1-2 cm. long, sparingly pubescent on both sides, with long hairs; raceme 

 subsessile, 1-4 cm. long; bracts setaceous, equalling or slightly exceeding the 

 buds; calyx silky; lower lip lanceolate, about 6 mm. long; upper lip ovate, 3-4 

 mm. long; corolla pale blue, lilac or white, 7-8 mm. long; legume 1-1.5 cm. long, 

 about 4-seeded. Dry hills: Mont. Colo. Utah Ore. Plain Mont. Je- 

 Au. 



73. L. Watsonii Heller. Stems short, decumbent at the base, with few 

 stem-leaves, long-silky, 1-2 cm. long; leaflets 5-7, narrowly oblanceolate, loosely 

 ciliate on both sides, with in age brown hairs; raceme 5-12 cm. long; calyx long- 



