leguminosjE. 103 



long as the other petals, not reflexed, scarcely even erect. Stamens 

 monadelphous. Pod few-seeded, little longer than the calyx. 



1. U. Edrop^us, L. Three to six feet high, the numerous short 

 branchlets villous, ending in a stout spine: lower leaves sometimes 

 lanceolate, more commonly reduced to green spines % in. long: fl. % in. 

 long, yellow, solitary but often crowded on the branchlets; calyx villous. 

 — Spontaneous here and there about San Francisco. Feb. — June. 



15. SPARTIUM, Label. (Spanish Broom). Branches stout, terete, 

 green and rush-like, glabrous, sparsely leafy with 1-foliolate leaves, or 

 leafless, bearing terminal loose racemes of large yellow flowers. Oalyx 

 spathaceous, cleft to the base above, 5-toothed at apex. Banner roundish, 

 erect; keel acuminate. Stamens monadelphous. Pod compressed. 



1. S. junobum, L. Native of southern Europe. Spontaneous near 

 San Francisco. 



16. LUPOUS, Catullus (Lupine). Leaves palmately 5— 15-foliolate; 

 leaflets entire, sessile; stipules adnate, seldom conspicuous. Flowers 

 blue, pinkish or yellow, in terminal racemes, with bracts mostly caducous. 

 Oalyx deeply bilabiate; upper lip notched, lower usually entire, occa- 

 sionally 3-toothed or -cleft. Banner roundish; wings falcate-oblong, 

 commonly slightly united at tip in front of, and enclosing, the falcate 

 usually slender-pointed keel. Stamens monadelphous, dimorphous, 5 

 with longer and basifixed anthers, the alternate 5 with shorter and 

 versatile ones. Pods compressed, straight. 



* Pods several-seeded; cotyledons petiolate. 

 ■*- Annuals; flowers more or less verlicillate. 



1. L. micranthns, Dougl. Bather slender and weak, branched from 

 the base, 6 — 18 in. high, pilose-pubescent, not at all succulent: leaflets 

 5 — 7, narrowly linear to linear-spatulate, J£ — Vy% in. long, on petioles 

 twice as long: raceme peduncled, verticils 3 — 5, often indistinct: pedicels 

 1% lines long (in fruit 3 lines); upper calyx-lip with divergent lobes; 

 lower long, entire: corolla 2 lines long, blue, except the white and dotted 

 middle of the erect mucronulate banner, the white spot changing to light 

 blue; wings narrow, appressed; keel woolly-ciliate toward the apex; pod 

 5-seeded: seed quadrate-oval, whitish, with or without minute light 

 brown dots. — Common in sandy soils. 



2. L. polycarpus, Greene. Erect, sloulish, rather succulent, 1 — 2 ft. 

 high, with firm ascending branches from midway of the stem, pubescent: 

 leaflets 7, narrowly oblanceolate, 1 in. long; glabrous above: racemes 

 with 4 — 7 very distinct verticils; pedicels 1 line long: upper calyx-lip 

 bifid, its ovate segments short, parallel; lower scarcely longer, 3-nerved, 

 slightly notched at apex: corolla 1J^ lines long, deep blue; the obovate 



