PEA FAMILY 495 



long; peduncles 3-7 cm. long, racemes 1-7 cm. long, verticils 1-3; flowers 8-12 mm. long, 

 rarely scattered or umbellate by reduction of the raceme, pedicels 1-3 mm. long; upper calyx- 

 lip cleft, lower tridentate or entire ; petals blue and white, banner about 8 mm. long by 6-8 mm. 

 wide, elliptic, rhombic, obovate, or orbicular-obovate, angled to emarginate at apex, the purple- 

 streaked white center often changing to violet, the sides much reflexed, keel slender, not much 

 curved, ciliate along upper edges of slender acumen; pods appressed-pubescent, 15-20 mm. long, 

 3-5 mm. wide, ovules 5-8, seeds 2-3 mm. long, variously colored and marked. 



Sandy areas, Upper Sonoran and Transition Zones; Vancouver Island, British Columbia to Santa Barbara 

 County, California. Type locality : "in the interior of the country about the Columbia River, from Fort Vancou- 

 ver to the branches of Lewis and Clark's River . . . ." March-June. 



Lupinus bicolor var. umbellatus (Greene) C. P. Smith, Bull. Torrey Club 50: 377. 1923. {Lupinus 

 umbellatus Greene, Bull. Calif. Acad. 2: 145. 1886.) Racemes reduced to one verticil; flowers 6-8 mm. long. 

 Santa Cruz Island, Santa Barbara County, California. 



Lupinus bicolor var. tridentatus Eastw. Bull. Torrey Club 50: 377. 1923. Verticils 3-6 or more; flowers 

 6-8 mm long; lower calyx-lip tridentate. Clay soils and sandy loams, Upper Sonoran Zone; Vancouver Island to 

 San Diego County, California. Type locality: Santa Rosa, Sonoma County, California. 



Lupinus bicolor var. Pipersmithii (Heller) C. P. Smith, Bull. Torrey Club 50: 380. 1923. {Lupinus 

 Pipersmithii Heller, Muhlenbergia 7: 93. 1911.) Flowers 5-8 mm. long; keel non-ciliate or with 1-4 stray cilia. 

 Lower and Upper Sonoran Zones; San Joaquin Valley to Napa, San Mateo, and Monterey Counties, California. 

 Type locality: San Mateo County, near Stanford University, California. 



Lupinus bicolor var. microphallus (S. Wats.) C. P. Smith, Bull. Torrey Club 50: 382. 1923. {Lupinus 

 tnicranthus var. microphyllus S. Wats. Proc. Amer. Acad. 8: 535. 1873; Lupinus rostratus Eastw. Proc. Calif. 

 Acad II 6:424. 1896.) Flowers 4-6 mm. long; keel ciliate; ovules 5-8. Sandy soils, Upper and Lower Sonoran 

 Zones; abundant in southern California and locally appearing northward to Oregon. Type locality: San Diego, 

 California. Exceedingly variable as to form and size of leaflets. 



Lupinus bicolor var. trifidus (Torr.) C. P. Smith, Bull. Torrey Club 50: 386. 1923. {Lupinus micran- 

 thus var. trifidus S. Wats. Proc. Amer. Acad. 8: 535. 1873; Lupinus trifidus Torr. ex S. Wats. Proc. Amer. 

 Acad. 12: 250. 1877.) Flowers 5-8 mm. long; lower calyx-lip deeply trifid. Coastal sands, Humid Transition 

 Zone; San Francisco and Monterey, California. Type locality: San Francisco, California. 



23. Lupinus micranthus Dougl. Small-flowered Annual Lupine. Fig. 2582. 



Lupinus micranthus Dougl. ex Lindl. Bot. Reg. 15: pi. 1251. 1829. 

 Lupinus polycarpus Greene, Pittonia 1 : 171. 1886. 



Appressed- or subappressed-pubescent and more or less villous, 1-4 dm. tall, simple or 

 branched at the base, stout and succulent or slender and fibrous. Leaves glabrous or sparsely 

 hairy above, leaflets 5-7, linear to oblanceolate ; peduncles 3-6 cm. long, racemes 1-8 cm. long, 

 verticils 2-7 ; flowers 5-8 mm. long, pedicels stout, 1-2 mm. long ; calyx-lips broad, upper cleft, 

 lower tridentate ; petals blue and white, banner cuneate or spatulate, center turning violet, the 

 sides scarcely reflexing, keel short and broad, the blunt acumen scarcely upturned, ciliate above, 

 pods 25-30 mm. long, appressed-hairy, ovules 6-7, seeds oblong, thick, 3 mm. long, gray- or 

 brown-mottled. 



Clay soils, Lower Sonoran to Arid Transition Zones; Vancouver Island, British Columbia, to San Diego 

 County, California. Type locality: "Upon the gravelly banks of the southern tributaries of the Columbia and on 

 barren ground in the interior of California." March-June. 



24. Lupinus Lyallii A. Gray. Lyall's Lupine. Fig. 2583. 



Lupinus Lyallii A. Gray, Proc. Amer. Acad. 7: 334. 1868. 



Subappressed-silky, low, woody at base, rarely over 1 dm. tall. Leaves many, long-petioled, 

 crowded near the base, petioles slender, 3-5 cm. long, leaflets 5-6, oblanceolate, 4-10 mm. long, 

 appressed-silky on both sides; peduncles 5-10 cm. long, usually curved or bent, spreading or 

 decumbent, racemes capitate or subcapitate, about 25 mm. long, rarely more than twice as long 

 as wide; flowers 10-12 mm. long, bracts short, deciduous, pedicels 2 mm. long, spreading- 

 pubescent; upper calyx-lip cleft or deeply lobed, lower entire or tridentate; petals blue, banner 

 glabrous, 8-12 mm. long, wings narrow, keel straight, usually ciliate on the upper edges, but 

 sometimes non-ciliate ; pods silky, 10-15 mm. long, ovules 3 or 4, seeds about 2 mm. long. 



Dry mountain tops, Boreal Zone; Cascade Mountains of Washington to the southern Sierra Nevada of Cali- 

 fornia. Type locality: summit of the Cascade Mountains, latitude 49°. July-Sept. 



Lupinus Lyallii var. danaus (A. Gray) S. Wats. Proc. Amer. Acad. 8: 534. 1873. {Lupinus danaus 

 A Gray, Proc. Amer. Acad. 7: 335. 1867.) Flowers only 6-8 mm. long, the petals usually white or pale lilac; 

 leaflets silkv. usually not over 6 mm. long. Arctic-Alpine Zone; High Sierra Nevada of California, Mount Dana 

 to Mount Whitney. Type locality: Mount Dana, California. 



lupinus alpi,... 



234 1912 ) Leaflets greenish. 10-12 mm. long; flowers 8-10 mm. long, blue or purplish. Mountain sides, 

 Transition Zone to Canadian Zone; central Sierra Nevada of California to Harney, Deschutes, and Benton 

 Counties, Oregon. Type locality: "in the high Sierras of California." 



Lupinus Lyallii var. fruticulosus (Greene) C. P. Smith, Bull. Torrey Club 51: 303. 1924. {Lupinus 

 fruticulosus Greene, Muhlenbergia 8: 117. 1912.) The stoutest form with stems usually longer than their 

 peduncles and much branched from axillary buds; leaflets quite greenish often 15-18 mm. long; flowers^ 8-12 

 mm long; racemes sometimes more than twice as long as wide. Transition Zone; southern Cascade Mountains ot 

 Oregon (Lane and Klamath Counties). Type locality: Annie Creek Valley, Klamath County, Oregon. 



25. Lupinus caespitosus Nutt. Stemless Lupine. Fig. 2584. 



Lupinus caespitosus Nutt. in Torr. & Gray, Fl. N. Amer. 1 : 379. 1840. 



Subappressed-silky, dwarf, nearlv stemless, 8-12 cm. tall. Leaves long-petioled, silky on both 

 sides, all basal, petioles 5-8 cm. long, leaflets 5-7, oblanceolate, 12-25 mm. long; peduncles 

 scarcely 1 cm. long, the densely-flowered raceme thus nearly sessile, 4-8 cm. long, easily exceeded 



