PEA FAMILY 503 



silky on both sides; petioles 6-15 cm. long, stipules 15-20 mm. long, over half adnate; leaflets 

 5-8, cuneate to oblong-lanceolate or lanceolate, obtuse and apiculate, 40-70 by 10-15 mm.; pe- 

 duncles 10-25 cm. long, stout; racemes 10-15 cm. long, lower verticils distinct; flowers 10-12 

 mm. long, subverticillate, spreading or ascending; pedicels 1-1.5 mm. long, appressed-sericeous, 

 floral bracts caducous, about 5 mm. long; calyx subsymmetrical, upper lip tridentate, lower 

 shortly tridentate; petals pale yellow, persistent in fruit, banner pubescent on back near apex, 

 with a brown spot between center and apex, very little reflexed from wings, wings rather narrow, 

 usually not covering lower bend of keel, keel ciliate on upper edges ; pods appressed-silky, ovules 

 5, seeds not seen. 



Gravelly sides or floors of canyons, Upper Sonoran Zone; Mojave slopes of the San Gabriel and Tehachapi 

 Mountains, Los Angeles and Kern Counties, California. Type locality: Rock Creek, San Gabriel Mountains. 

 April. 



46. Lupinus leucophyllus Dougl. Woolly-leaved Lupine. Fig. 2605. 



Lupinus leucophyllus Dougl. ex Lindl. Bot. Reg. 13: pi. 1124. 1827. 



Lupinus plumosus Dougl. ex Lindl. op. cit. 15: pi. 1217. 1829. 



Lupinus leucophyllus plumosus Robinson ex Coville, Contr. U.S. Nat. Herb. 11: 354. 1906. 



Woolly-canescent and more or less villous, often densely so, stout, erect, branched, 6-9 dm. 

 tall. Leaves many, woolly on both sides, lower long-petioled, petioles 3-15 cm. long, leaflets 

 7-9, oblanceolate, 3-6 dm. long; peduncles 3-8 cm. long, racemes 8-30 cm. long, usually dense 

 and cylindrical; flowers crowded, 12-14 mm. long, pedicels 1-2 mm. long, densely spreading- 

 pubescent, bracts usually persistent, shorter or longer than the buds ; calyx often gibbous, upper 

 lip bidentate or lobed, lower entire or obscurely toothed ; petals white, pinkish, bluish, or purple, 

 often turning brown, banner small, ovate or oblong, acute or rounded at apex, pubescent on the 

 back, keel stout, ciliate on the upper margins ; pods woolly, 20-25 mm. long, ovules 3-6, seeds 

 reddish brown and obscurely mottled or drab and gray spotted. 



Dry soils. Upper Sonoran and Arid Transition Zones; eastern Washington and western Montana to central 

 Utah and northern California (Lassen, Trinity, and Colusa Counties). Type locality: "from the Great Falls of 

 the Columbia in North America to the Sources of the Missouri among the Rocky Mountains." May-July. 



Lupinus leucophyllus var. Belliae C. P. Smith, Bull. Torrey Club 51: 305. 1924. Flowers only 8-10 mm. 

 long; stems more or less villous. Upper Sonoran Zone; northern California and eastern Washington to central 

 Montana. Type locality: Crystal Creek, Power County, Idaho. 



Lupinus leucophyllus var. canescens (Howell) C. P. Smith, Bull. Torrey Club 51 : 306. 1924. (Lupinus 

 canescens Howell, Erythea 1: 110. 1893.) Flowers 8-10 mm. long; racemes densely or loosely flowered; stems 

 without the spreading hairs. Upper Sonoran and Arid Transition Zones; eastern Washington to Modoc County, 

 California. Type locality: western base of Buck's Mountain, a spur of the Blue Mountains of Oregon. 



Lupinus leucophyllus var. tenuispicus (A. Nels.) C. P. Smith, Bull. Torrey Club 51 : 306. 1924. 

 (Lupinus tenuispicus A. Nels. Bot. Gaz. 54: 410. 1912.) Flowers only 6-7 mm. long; banner suborbicular; 

 racemes very slender, many-flowered; pubescence very short, but more or less spreading and tangled. Upper 

 Sonoran Zone; western Idaho and eastern Oregon. 



Lupinus retrorsus Henderson, Bull. Torrey Club 27: 344. 1900. Villous with long, spreading or retrorse 

 hairs, stout, erect, simple or branching, 6-9 dm. tall. Leaves long-petioled, glabrate above, or subvillous on both 

 sides, deep green above, paler below, petioles 15-22 cm. long, villous and short-hairy; leaflets 9-11, oblanceolate, 

 4-10 cm. long; racemes 6-35 cm. long, often dense; flowers 8-12 mm. long, whorled or spirally arranged, pedicels 

 1-4 mm. long, spreading-pubescent, bracts persistent, villous, long; calyx gibbous, woolly-villous, upper lip 

 bidentate, lower entire or tridentate; banner broadly-obovate, pubescent on the back, keel ciliate on the upper 

 edges; pods villous, 2 cm. long, ovules 5-6, seeds pinkish brown, dotted with darker. Moist woods or grassy hills, 

 Transition Zone; Benewah and Kootenai Counties, Idaho, to Stevens County, Washington. Type locality: hills 

 of Coeur d'Alene Lake, opposite Harrison, Kootenai County, Idaho. 



47. Lupinus Chamissonis Eschsch. Chamisso's Bush Lupine. Fig. 2606. 



Lupinus Chamissonis Eschsch. Mem. Acad. St.-Petersb. 10: 288. 1826. 

 Lupinus Chamissonis var. longebracteatus S. Wats. Bot. Calf. 1: 117. 1876. 



Minutely spreading-pubescent, often tomentose, an erect, branching shrub, 3-9 dm. tall. 

 Leaves many, short-petioled, axillary clusters well-developed, petioles about 2 cm. long, leaflets 

 6-9, oblanceolate, silky on both sides, 12-25 mm. long by 4-6 mm. wide; peduncles 2-5 cm. long, 

 racemes 6-15 cm. long; flowers 12-16 mm. long, scattered or subverticillate, pedicels 6-8 mm. 

 long, spreading-pubescent, bracts early deciduous, long or short ; upper calyx-lip cleft, lower en- 

 tire ; petals blue or lavender, banner with a yellow center, pubescent on the back near apex, keel 

 arcuate, non-ciliate or with two or three stray cilia on upper edges ; pods brown, sublanate, 30-35 

 mm. long by 8-10 mm. wide, ovules 6-7, seeds 4-5 mm. long, mottled or clouded with brown. 



Coastal sand hills, Humid Transition Zone; San Francisco and Monterey to Los Angeles County, California. 

 Type locality: "in arenosis novae Calif orniae." April-June. 



48. Lupinus albifrons Benth. Bentham's Bush Lupine. Silver Lupine. White- 



foliaged Lupine. Fig. 2607. 



Lupinus albifrons Benth. ex Lindl. Bot. Reg. 19: pi. 1642. 1833. 



Appressed-silky, arborescent, often with a distinct woody trunk, much branched, 6—15 dm. 

 tall. Leaves many, lower often long-petioled, petioles 2-8 cm. long, mostly longer than their 

 leaflets, leaflets 7 to 10, oblanceolate to spatulate or obovate, acute or rounded at apex, 12-30 

 mm. long by 4-10 mm. wide, silvery-silky on both sides ; peduncles 5-13 cm. long, racemes 8-30 

 cm. long ; flowers 10-14 mm. long, largely verticillate, pedicels 4-8 mm. long, spreading-pubescent, 

 bracts deciduous, more or less exceeding buds ; upper calyx-lip cleft, lower entire ; petals blue 

 or purplish, banner more or less pubescent on the back near the apex, the white or yellow center 

 early changing to violet, keel ciliate on upper edges of acumen, narrowed toward the base ; pods 



