352 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Taller, 30 to SO cm. high; keel naked or only obsoletely ciliate. 

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



on both surfaces 21. L. subaljnnuf>. 



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



on the upper surface 22. L. icyethii. 



§ 4. RiviLAREs.— Leaflets green and glabrous (or obscurely puberu- 

 lent) al)ove, glabrous or minutely appressed-pubescent l>oneath; 

 corolla blue or purple, varying to roseate or white; calyx sub- 

 symmetrical at the ba.se. 

 Leaflets of the lower leaves 10 to 16, very large, 6 to 14 cm. long, 1.7 to 



3.6 cm. wide 23. Z. polyphyllus. 



Leaflets 6 to 9 in number, 4 to cm. long, 5 to 15 mm. broad. 



Bracts long, spreading-villous, usually persisting in anthesis; stems 



simple 24. L. hirkei. 



Bracts subulate, minutely appressed-pubesc<?nt and cancscent, usually 



caducous ; stems branched 25. L. riwlaris. 



§ 5. SfLPHiREi. — Perennials, leafy-stemmed; corolla yellow: calyx 

 subsymmetrical at the ba.se. 



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



Flowers smaller; petals about I cm. long, light yellow 27. L. sulfkureus. 



I 6. Calcarati. — Perennials, leafy-stemmed, erect, not maritime; calyx 

 strongly saccate or shortl}- spurred at the base. 



Corolla blue 28. L. laxiflorus. 



Corolla pale yellow 28a. L. laxiflorus 



theiochrous. 



1. Lupinus pusiUus Pursh, Fl. 2: 468. 1814. 



Type IjOCAUTt: "On the banks of the Missouri." Collected by Lewis. 

 Range: Washington to Dakota, southward to Arizona, and New Mexico. 

 Specimens examined: Pasco, Pij>er 2982, July 11, 1897; Hindshaw 39; Mabton, Cotton 

 1115. 



Zonal distribi'tion: Upper Sonoran. 



2. Lupinus microcarpus Sims, Bot. Mag. 60: pi. 2^13. 1823. 

 Type ixx^ality: Chile. 



Range: Washington to California. Chile. 



Specimens examined: Coupevillc,G'ar6''ncr 88; Ellensburg, Piper, July 9, 1897; Whited 

 536; Elmer 371; North Yakima, Henderson, October 5,1^92; Watt, August, 1895; Mrs. 

 Steinweg in 1894; without locality, Vasey 259; Prosser, Cotton 912; Wenas, Griffiths & 

 Cotton 85. 



2iONAL distribution: Upper Sonoran, 



3. Lupinus micranthus Dougl.; Lindl. Bot. Reg. 16: pl..l25L 1829. 



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

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



Range: 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, Laurence 185; 

 Nisqually, Wilkes Expedition, 118. 



Zonal distribution: Humid Transition. 



4. Lupinus bicolor Lindl. Bot. Reg. 13: jd. 1109. 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. 



