Lupinus. LEGUMINOS^. 



117 



§ 1. Floivers in terminal racemes: sides of the standard reflexed : ovules several: 



cotyledons petioled in germination. — Lupinus proper. 

 * Perennials, not dwarf: stems somewhat woody in Nos. 1 to 3, the rest vjholly her- 

 baceous, and Nos. 4: to 7 mostly succulent and Jistuloas : 2wds oblong. Spec. 1 to 24. 

 4- Floivers large: ovules Q to VI. 



++• Afore or less ivoody at base, tall, leafy, with short petioles : jiubescence silky, mostly 

 appressed : bracts deciduous : Jioivers on slender pedicels : calyx-lips nearly equal : 

 ovules mostly ^ to 12. 



1. L. arboreus, Sims. Shrubby, often 4 to 10 feet high : pubescence not 

 dense, short : leaflets 7 to 11, mostly 9, glabrate above, narrowly lanceolate, | to 

 If inches long, acute : raceme loose ; bracts linear, equalling the calyx : flowers 

 mostly verticillate, sulphur-yellow, fragrant : calyx-lips broad, entire or nearly so : 

 keel slightly ciliate : pod pubescent, usually 10- 12-seeded, 1| to 3 inches long, 

 4 to 6 lines wide : seeds oblong-oval, terete, three lines long, dark-colored. — Bot. 

 Mag. t. 682 ; Liudl. Bot. Reg. xxiv, t. 32 ; Watson, 1. c. 523. L. rividaris, Agardh, 

 Synopsis, 24. L. macrocarpus. Hook. & Arn. Bot. Beechey, 138. 



From Sacramento Valley to San Diego, common ; from April to August. Specimens rarely 

 occur with the pubescence more dense, villous, and somewhat spreading. The flowers also appear 

 to be sometimes blue or purplish. Used successfully as a protection against drifting sands. 



2. L. Chamissonis, Esch. Less shrubby, 1 to 4 feet high : pubescence dense, 

 appressed : leaflets 7 to 9, cuneate-obovate, a half to an inch long, obtuse and mu- 

 cronulate or acutish, very silky on both sides : bracts lanceolate, shorter than the 

 calyx : flowers subverticillate, blue, violet, pink, or white : upper calyx-lip deeply 

 cleft ; bractlets small, setaceous : keel usually slightly ciliate : ovules 6 to 8 : pod 

 silky, 1^ inches long, 4-8-seeded: seeds broader, somewhat flattened, 2-|- lines long, 

 light-colored and mottled. — Mem. Acad. Petr. x. 288. L. albifrons, Benth. in 

 Hort. Soc. Trans, n. ser. i. 410; Lindl. Bot. Eeg. t. 1642; Watson, 1. c. 523. 

 L. sericeus, Hook. & Aru. Bot. Beechey, 138. 



Var. longifolius, Watson. Scarcely woody at base : stems less leafy and peti- 

 oles more elungated : keel pubescent near the margin. 



Var. (?) longebracteatus, Watson. Stem and branches more or less villous : 

 bracts much exceeding the calyx. — L. macrocarpus, Torr. in Pacif. P. Pep. iv. 81. 



From Oregon to Southern Califoniia, common. The variety longifolius from San Diego (Cleve- 

 land) to Ojai {Pexkham), San Pascual {Thurbcr) and San Antonio River, Brerccr. "The var. 

 longebracteatus about San Francisco (Bigelow, Greene), and Punta de los Reyes, Bigcloic. 



3. L. Douglasii, Agardh. Slightly woody at base : pubescence short, tomen- 

 tose or silky, apjiri'ssed : leaflets 7 to 9, oblanceolate or sometimes cuneate-oblong, 

 1 to 1| inches long, pubescent on both sides : racemes often long-peduncled ; bracts 

 linear-setaceous, exceeding the calyx : flowers scattered or subverticillate, blue or 

 purple : calyx with long setaceous bractlets, the upper lip nearly 2-parted : keel 

 ciliate : ovules 8 to 9 : pod unknown. — Synopsis, 34 ; Watson, 1. c. 524. 



From above San Francisco to Monterey and Los Angeles. 



++ -^+ Stems mostly succulent and fistulous : leaflets glabrous above, oblong to oblance- 

 olate : flowers subverticillate : bracts deciduous : calyx tisually slightly toothed : 

 ovides 8 or more. 



4. L. polyphyllus, Lindl. Stout, erect, 2 to 5 feet high, sparingly A-illous, the 

 calyx, pedicels and youngest leaves silky-pubescent : stipules large, triangular to 

 subulate : leaves distant, long-petioled ; leaflets 10 to 16, or often 8 to 10 in the 

 upper leaves, 2 to 6 inches long : racemes frequentl}'' a foot or two long ; bracts ob- 

 long-lanceolate, equalling or shorter than the calyx : flowers mostly scattered, on 

 long pedicels, blue, purple, or white : calyx-lips nearly equal, entire ; bractlets often 



