Lupinus. LEGUMINOSJS. 117 



1. Flowers in terminal racemes: sides of the standard re flexed : ovules several; 

 cotyledons petioled in germination. LUPJNUS proper. 



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

 baceous, and Nos. 4 to 7 mostly succulent and flstulous : pods oblong. Spec. 1 to 24. 



t- Floivers large: ovules 6 to 12. 



++ More or less ivoody at base, tall, leafy, with short petioles : pubescence silky, mostly 

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

 ovules mostly 8 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, f 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 ; Lindl. 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. Reg. t. 1642; Watson, 1. c. 523. 

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



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

 oles more elongated : 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. R. Rep. iv. 81. 



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

 land) to Ojai (Peckham), San Pascual (Thurber) and San Antonio River, Brewer. The var. 

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



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

 tose or silky, appressed : leaflets 7 to 9, oblanceolate or sometimes cuneate-oblong, 

 1 to 1 J 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 Jistulous : leaflets glabrous above, oblong to oblance- 

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

 ovules 8 or more. 



4. L. polyphyllus, Lindl. Stout, erect, 2 to 5 feet high, sparingly villous, 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 frequently 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 



