352 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Taller, 30 to 90 em. high; keel naked or only obsoletely ciliate. 
Leaflets obtuse or rounded at the apex, about 4 cm. long, loosely hairy 
on both surfaces ........-2.-.--.--.----. 22 -2--0222--2 02-22-2222 21. L. subalpinus. 
Leaflets oblanceolate, acute, 5 to 6 cm. long, glabrous or nearly so 
on the upper surface .........-.-.-.-.----------------------- 22. L. wyethi. 
§ 4. Rivu_ares.—Leaflets green and glabrous (or obscurely puberu- 
lent) above, glabrous or minutely appressed-pubescent beneath; 
corolla blue or purple, varying to roseate or white; calyx sub- 
symmetrical at the base. 
Leaflets of the lower leaves 10 to 16, very large, 6 to 14 em. long, 1.7 to 
3.6 cm. wide ....-.-..- 2-2-2 -2.0-- 2-22-22 ee ee ee eee eee ee ee ee 23. L. polyphyllus. 
Leaflets 6 to 9 in number, 4 to 9 cm. long, 5 to 15mm. broad. 
Bracts long, spreading-villous, usually persisting in anthesis; stems 
simple __.......-.-.---------2 2202-22222 ---- beeen eee ee eee 24. L. burkei. 
Bracts subulate, minutely appressed-pubescent and canescent, usually 
caducous; stems branched....-.....-...-.-...--------------- 25. L. rivularis. 
§ 5. Su-tpHuREI.—Perennials, leafy-stemmed; corolla yellow; calyx 
subsymmetrical at the base. 
Flowers large; petals about 16 mm. long, deep yellow .-.-... 2... -.--- 26. L. sabinir. 
Flowers smaller; petals about 1 em. long, light yellow... ..........--- 27. L. sulphureus. 
§ 6. CaLtcarati.—Perennials, leafy-stemmed, erect, not maritime; calyx ; 
strongly saccate or shortly spurred at the base. 
Corolla blue...........2-.-2-2 2-2-2 22 ee eee ee eee ee eee ee eee 28. L. laxiflorus. 
Corolla pale yellow.......-..... 2-2-2. ---- +--+ +2 22-22 eee eee 28a. L. laxiflorus 
theiochrous. 
1. Lupinus pusillus Pursh, Fl. 2: 468. 1814. 
Type Locatity: “‘On the banks of the Missouri.”” Collected by Lewis. 
Range: Washington to Dakota, southward to Arizona, and New Mexico. 
SPECIMENS EXAMINED: Pasco, Piper 2982, July 11, 1897; Hindshaw 39; Mabton, Cotton 
1115. 
ZONAL DISTRIBUTION: Upper Sonoran. 
2. Lupinus microcarpus Sims, Bot. Mag. 50: pl. 2413. 1828. 
Type Locauiry: Chile. 
Rance: Washington to California. Chile. 
SPECIMENS EXAMINED: Coupeville, Gardner 88; Ellensburg, Piper, July 9, 1897; Whited 
536; Elmer 371; North Yakima, Henderson, October 5, 1892; Watt, August, 1895; Mrs. 
Steinweg in 1894; without locality, Vasey 259; Prosser, Cotton 912; Wenas, Griffiths & 
Cotton 85. 
ZONAL DISTRIBUTION: Upper Sonoran. 
3. Lupinus micranthus Dougl.; Lindl. Bot. Reg. 15: pl. 1257. 1829. 
Type Locauity: ‘‘ Upon the gravelly banks of the southern tributaries of the Columbia 
and on barren ground in the interior of California.’ Collected by Douglas. 
Rance: British Columbia to California. 
SPECIMENS EXAMINED: Whidby Island, Gardner, July, 1898; Tacoma, Flett 194, May 20, 
1895; Leckenby, May, 1898; Olympia, Kincaid, July, 1896; Johns Island, Lawrence 185; 
Nisqually, Wilkes Expedition, 118. 
ZONAL DISTRIBUTION: Humid Transition. 
4. Lupinus bicolor Lindl. Bot. Reg. 13: pl. 1109. 1827. 
Type Locaity. “In the interior of the country about the Columbia River, from Fort 
Vancouver to the branches of Lewis and Clarke’s River, always on dry gravelly soil under 
the shade of trees in the open plains.” Collected by Douglas. 
