PEA FAMILY 467 



banner with a darker spot; legumes fully 2 cm. long, 4-5-seeded. Along river 

 banks: Mont. Subniont. 



56. L. retrorsus Renders. Stem 6-9 dm. high, hirsute, with reflexed hairs; 

 leaflets greenish-villous above, white-villous beneath, 4-7 cm. long, narrowly 

 oblanceolate; racemes 6-30 cm. long; flowers 8-12 mm. long; upper calyx Up 

 shorter than the lower; banner pubescent; keel ciliate; pod 2 cm. long, 3-6- 

 seeded. Grassy places: Ida. Au. 



57. L. leucophyllus Dougl. Stem 6-10 dm. high, leafy, branched, velutin- 

 ous and with scattered longer, spreading or reflexed hairs; leaflets 7-10, oblance- 

 olate, 3-7 cm. long, densely silky-canescent on both sides, in age fulvous; racemes 

 dense, 1.5-3 dm. long, sessile or nearly so; calyx velutinous; lower hp lanceolate, 

 8-9 mm. long, the upper lance-ovate, 7-8 mm. long; corolla 10-12 mm. long, 

 light blue, pink, or white, with darker striations; banner with a lighter spot, 

 densely hairy without; legume about 2.5 cm. long, 5-6-seeded. Meadows and 

 hills: Wash.— Calif. — Utah — Wyo. — Mont. Submont. — Mont. My-Jl. 



58. L. plumosus Dougl. Stem stout, erect, 5-8 dm. high, densely pubescent 

 partly with short, partly with long shaggy, reflexed or spreading hairs; leaflets 

 5-9, oblanceolate, densely long-silky on both sides, acute, 3-5 cm. long; racemes 

 dense, 1-2 dm. long; calyx gibbous, shaggy-silky; lower lip lanceolate, 7 mm. 

 long, the upper ovate, 6 mm. long; corolla light blue or pink; banner with a yellow- 

 ish spot, densely hairy without; legume 2-2.5 cm. long, 4-5-seeded. Meadows: 

 Wash. — Ore. — Utah — Ida. Submont. Je-Jl. 



59. L. Jonesii Rydb. Stem over 1 m. high, densely pubescent with a short 

 pubescence and long spreading silky hairs; leaflets 7-9, oblanceolate, densely 

 appressed-pubescent, with short yellowish hairs on both sides, 4-7 cm. long; 

 raceme long and dense, many-flowered; flowers about 16 mm. long; calyx yellow- 

 ish, silky; lips ovate-lanceolate, the lower about 8-9 mm. long, the upper 6-7 

 mm. long; corolla white or ochroleucous, rarely pinkish; banner with a faint 

 brownish spot; legume about 3 cm. long, 6-7-seeded. Sandy plains and moun- 

 tains: Utah. Je-Au. 



60. L. barbiger S. Wats. Stem 5-7 dm. high, densely pubescent, with 

 short stiff hairs and some longer ones; leaflets 5-7, narrowly oblanceolate, silky on 

 both sides, 4-7 cm. long; bracts setaceous, longer than the calyx; lower calyx- 

 hp narrow, lanceolate, entire, slightly longer than the ovate upper one; corolla 



1 cm. long, mostly ochroleucous; petals subequal; keel copiously ciliate; pod 

 about 7-seeded. Meadows: s Utah. 



61. L. ramosus E. Nels. Stems several, 2-4 dm. high, with divaricate 

 branches, finely canescent and sparingly villous; leaflets 5-8, narrowly oblance- 

 olate, densely soft-silky on both sides, 2-4 cm. long; bracts ovate or lanceolate, 



2 mm. long; flowers about 1 cm. long; calyx silky, the lower lip a little longer than 

 the upper; banner silky on the back, pale blue, with a yellowish white spot; pod 

 3-5-seeded. Dry banks: Wyo. Au. 



62. L. depressus Rydb. Plant cespitose; stems decumbent, 1-2 dm. long, 

 appressed silverj' silky pubescent; leaflets about 7, oblanceolate, usually obtusish, 

 1.5-2 cm. long, densely appressed silvery canescent; racemes short; bracts lance- 

 olate; flowers 8-9 mm. long; calyx long-villous; lips ovate-lanceolate, the lower 

 about one-third longer than the upper; corolla light bluish purple; banner gla- 

 brous, shghtly shorter than the wings. Gravelly mountain slopes: Ida. Jl. 



63. L. aridus Dougl. Densely cespitose; stems 1-2 dm. high, loosely hir- 

 sute, leafy at the base; inflorescence loose, 5-10 cm. long; bracts subulate, about 

 equalling the buds; calyx long-silky; hps lanceolate, subequal, about 6 mm. long; 

 corolla purple or violet, about 1 cm. long; pod 1 cm. long, 3-4-seeded. Dry 

 prairies: Wash. — Ore. — Canadian Rockies. Subalp. My-Jl. 



64. L. minimus Dougl. Densely cespitose, subacaulescent perennial, 1-1.5 

 dm. high; leaflets 5-9, oblanceolate or obovate, acute, densely silky canescent, 

 0.5-1.5 cm. long; raceme short, dense, 2-5 cm. long; bracts lanceolate, acuminate, 

 shorter than the buds; calyx canescent; lips lanceolate, the lower 6 mm., the 



