35-2 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Taller, 30 to SO cm. liigh; keel naked or only olisoietely ciJiate. 



Leaflets obtuse or rounded at the apex, about 4 em. long, loosely hairy 



on both surfaces 21 . L. suhalpinus. 



Leaflets oblanceolate, acute, 5 to 6 cm. long, glabrous or nearly so 



on the upper surface 22. L. mjethii. 



§ 4. RivuLAREs. — Leaflets greew and glabrous (or obscurely puberu- 



lent) above, glabrous or minutely appressed-pubescent Ijeneath; 



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 cm. long, 1.7 to 



3.6 cm. wide 23. L. pohjphi/lhts. 



Leaflets 6 to 9 in number, 4 to f) cm. long, 5 to 1.5 nnn. broad. 



Bracts long, spreading-villous, usually persisting inanthesis; stems 



simple 24. i. hurl-ei. 



Bracts subulate, minutely appressed-pubescent and canescent, usually 



caducous; stems branched - . . 2n. L. rivvlaris. 



§ 5. SuLPHLREi. — Perennials, leafy-stemmed: corolla yellow: calvx 

 subsymmetrical at the base. 



Flowers large ; petals about 16 mm. long, deep yellow 26. L. mhinii. 



Flowers smaller; petals about 1 cm. long, light yellow 27. L. sidphureus. 



§ 6. Calcarati. — Perennials, leafy-stemmed, erect, not maritime: calyx 

 strongly saccate or shortly spurred at the base. 



Corolla blue 28. L. laxijlorus. 



Corolla pale yellow 28a. L. laxiforus 



tJieioclirous. 



1. Lupinus pusillus Pur.sh, \'\. 2: 468. 1814. 



Type locality: "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: Hindshaio 39: Mabton, Cotton 

 1115. 



Zonal distribition: Upper S(in(jran. 



2. Lupinus microcarpus Sims, Bot. Mag. 50: /?/. 2.!,1.). 1823. 

 Type loc.vlity: Chile. 



Range: Washington to California. Chile. 



Specimens examined: Coupeville, trarJnfr 88; EUensburg, Pi'/jcr, July 9, 1897; Whited 

 536; Elmer S71; North Yakima, i7eruZer.so/i, October 5, 1892; Watt, August, 1895; Mrs. 

 Steinu-eg in 1894; without locality, Vasey 259: Prosser, Cotton 912; Wenas, Griffiths d' 

 Cotton 85. 



Zonal distribition: l^]iper Sonoran. 



3. Lupinus micranthus Dough; Lindl. Bot. Reg. 15: pi. 1251. 1829. 



Type locality: "Upon the gravelly banks of the southern tributaries of the Columbia 

 and on barren ground in the interior of California." Collected by Douglas. 



R.\nge: British Columbia to California. 



Specimens e.xamined: Whidby Island, Gardner, July, 1898: Tacoma, Flett 194, May 20, 

 1895; LecTcenby, 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: pi. 1100. 1827. 



Type locality. "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. 



