PEA FAMILY 509 



cm. long or occasionally longer, leaflets 6-9, elliptic- or oblong-oblanceolate, obtuse, 35-60 by 

 8-10 mm., equally subsilky on both sides; peduncles 6-12 cm. long, racemes 20-40 cm. long, 

 flowers 14—18 mm. long, scattered or subverticillate, bracts deciduous, pedicels 5-10 mm. long, 

 spreading-pubescent ; calyx densely short- velvety, upper lip bidentate or cleft, lower entire or 

 minutely bidentate ; petals blue or bluish, rarely yellowish, banner glabrous, suborbicular, 14-18 

 mm. wide, keel more or less ciliate on the upper edges, somewhat curved; pods dull yellow, 

 40-60 by 9-10 mm., ovules 6-8, seeds about 6 by 4 mm., gray, with dark brown lateral lines and 

 various mottlings. 



Foothills and ocean bluffs, Upper Sonoran Zone; Los Angeles and San Bernardino Counties to San Diego 

 County, California. Type locality: San Diego to Ojai, San Pascual, and San Antonio River. April-July. 



62. Lupinus arbdreus Sims. Tree Lupine. Yellow-flowered Bush Lupine. 



Fig. 2621. 



Lupinus arboreus Sims, Bot. Mag. 18: pi. 682. 1803. 

 Lupinus propinquus Greene, Erythea 1 : 126. 1893. 



Appressed-pubescent to glabrate, rarely villous, branching shrub with a distinct trunk, but 

 flowering the second or third year from seed, before showing the shrubby character, rarely per- 

 sistently low and cespitose, 4-25 dm. tall. Leaves many, short-petioled, axillary shoots well de- 

 veloped, petioles 3-6 cm. long, leaflets 6-12, oblanceolate, appressed-pubescent on both sides 

 or glabrate above, 30-60 by 5-10 mm. ; peduncles 4-10 cm. long, racemes 10-30 cm. long, flowers 

 14-17 mm. long, scattered or subverticillate, bracts early deciduous, pedicels 6-10 mm. long, 

 spreading-pubescent ; upper calyx-lip notched or retuse, lower entire ; petals broad, commonly 

 bright yellow, but sometimes lilac, blue, violet, or mixed yellow and purple, banner suborbicular, 

 glabrous, keel arcuate, ciliate along upper margins ; pods dark brown, appressed-pubescent, 50-70 

 by 8-12 mm., ovules 8-12, seeds oblong, dark brown, unmarked or obscurely mottled, but with a 

 pair of pale spots embracing the micropyle. 



Sandy areas and canyons near the ocean, Humid Transition Zone; Santa Barbara County to Humboldt 

 County, California, also at a few points along the coast of Washington and at Victoria, Vancouver Island, 

 where said to be introduced. Type locality: not stated, but probably Monterey or San Francisco, California. 

 March-June. 



Lupinus arboreus var. eximius (Davy) C. P. Smith in Jepson, Man. Fl. PI. Calif. 531. 1925. {Lupinus 

 eximius Davy, Erythea 3: 116. 1895.) More or less villous, season's growth and internodes much shorter 

 than in the species, hence leaves and flowers crowded; racemes only 5-10 cm. long; wings blue, banner largely 

 yellow. Exposed mountain sides, Upper Sonoran Zone; near summit, Montara Mountain, San Mateo County, 

 California. Type locality: highest ridge above Lake Pilarcitos, San Mateo County, California. 



63. Lupinus rivularis Dougl. Riverbank Lupine. Fig. 2622. 



Lupinus rivularis Dougl. ex Lindl. Bot. Reg. 19: pi. 1595. 1833. 

 Lupinus lignipes Heller, Muhlenbergia 8: 66. 1912. 



Appressed-subsilky and more or less villous, green, stems simple or branched, ascending or 

 erect, or sometimes decumbent, often fistulous, over 3 mm. thick, 4-9 dm. tall. Leaves short- 

 petioled, not crowded, petioles 3-5 cm. long, rarely longer, leaflets 5-9, oblanceolate, acute or 

 obtuse, sparsely appressed-pubescent beneath, becoming glabrous above, 30-40 by 5-10 mm.; 

 peduncles 4-10 cm. long, racemes 6-20 cm. long; flowers 12-16 mm. long, verticillate or subver- 

 ticillate, bracts early deciduous, pedicels 5-10 mm. long, spreading- or rarely appressed-pubescent ; 

 upper calyx-lip bidentate, lower entire ; petals blue or variegated, banner glabrous, usually with 

 the apical portion yellow, keel arcuate, ciliate on the upper edges; pods 40-50 by 7-10 mm., dull 

 yellow and dark brown, subappressed-hairy, ovules 8-12, seeds 3-4 mm. long, mottled, usually 

 with a prominent diagonal line on each side. 



Sands or gravels, near streams or marshes, Transition Zone; mostly coastal, but reaching its maximum de- 

 velopment in the Willamette Valley, Oregon, southern British Columbia to Mendocino County, California. 

 Type locality: California. May- Aug. 



64. Lupinus variicolor Steudel. Lindley Varied Lupine. Fig. 2623. 



Lupinus versicolor Lindl. Bot. Reg. 23: pi. 1979. 1837. Not Lupinus versicolor Sweet. 

 Lupinus variicolor Steudel, Nom. ed. 2. 2: 78. 1841. 

 Lupinus franciscanus Greene, Pittonia 1: 64. 1887. 

 Lupinus Michenerii Greene, Erythea 2: 119. 1894. 



Appressed-subsilky and more or less villous, greenish, the stems usually branched s J end er, 

 decumbent or prostrate, 2-3 mm. thick, 2-8 dm. long. Leaves many, usually long-petioled, with 

 axillary clusters well developed, petioles 4-10 cm. long, stipules and nodes equally hairy with 

 the internodes, leaflets 7-9, oblanceolate, acute or obtuse, appressed-pubescent or glabrate above, 

 20-35 by 4-8 mm.; peduncles 4-12 cm. long, racemes 6-15 cm. long; flowers 11 7 16 mm. long, 

 verticillate, bracts early deciduous, pedicels 4-12 mm. long, appressed- or spreading-pubescent ; 

 calyx greenish, upper lip entire or notched, lower entire ; petals yellow, whitish, pinkish, bluish, 

 or purple the individual flower often variegated, the wings often darker than the glabrous ban- 

 ner, keel 'arcuate, ciliate on the upper edges ; pods 30-40 by 7-10 mm., dark brown, loosely or 

 appressed-hairy, ovules 7-9, seeds 3^r mm. long, variously mottled. 



Grassy fields and slopes near the coast, Humid Transition Zone; Humboldt County to Monterey, California. 

 Type locality: California. May- July. 



65. Lupinus littoralis Dougl. Seashore Lupine. Chinook Licorice. Fig. 2624. 



Lupinus littoralis Dougl. ex Lindl. Bot. Reg. 14: pi. 1198. 1828. 



Appressed-silky and more or less villous, especially at the nodes, stems decumbent, slender, 



