86 LEGUMINOS^. 



13. CYTISUS, Dioscorides (Broom). Shrubs with green very leafy or 

 nearly leafless often angular branches, palmately or pinnately 3-foliolate 

 leaves (leaflets entire), and solitary or racemose yellow or white flowers. 

 Calyx with campanulate tube and bilabiate limb. Petals broad ; keel 

 obtuse. Stamens monadelphous. Pod compressed, several-seeded. — 

 Natives of the Old World ; becoming spontaneous on the Pacific coast of 

 America. 



1. O. Oanaeiensis. Linn. Sp. PL 709 (1753), under Genista. Much 

 branched, 3 — -6 ft. high, soft-pubescent, the branches and branchlets very 

 leafy : leaflets }4 — M in- long '■ A- yellow, in numerous terminal short 

 racemes, fragrant ; calyx with upper segment deeply, lower obsoletely 

 3- toothed at apex ; banner not reflexed ; keel deflexed, releasiug the 

 stamens. — Running wild in profusion on the grounds of the University at 

 Berkeley : flowering throughout the year, but most freely in Jan. and Feb. 



2. C. scoPARius, Link. Enum. ii. 241 (1822) ; Linn. Sp. PI. 709 (1753), 

 under Spartium. Size of the last, but sparingly leafy, the branches promi- 

 nently angular : leaflets glabrous, often 1 only : fl. large, bright yellow, 

 solitary or in pairs along the branchlets, in the leaf -axils and apparently 

 racemose : pod pilose along the margins. — Naturalized abundantly north- 

 ward ; more sparingly with us. Flo wering in spring only. 



3. 0. PROLiFERUS, Linn. f. Suppl. 328 (1781). Arborescent, branches 

 terete and, with the young leaves, etc., silky-pubescent : leaflets 3, 

 elliptic-lanceolate, 1 in. long or more : fl. white in lateral umbellate 

 racemes : banner reflexed : keel shorter than the wings, enclosing the 

 stamens : pod villous. — Native of Teneriffe ; a valued forage shrub in 

 some countries ; escaped from cultivation at Berkeley. Jan. Feb. 



14. TJLEX, Linnxus (Furze, Gorse). Compact very thorny shrubs 

 with simple prickle-pointed leaf-like organs, and scattered yellow flowers- 

 Calyx of 2 nearly or qiiite distinct yellowish sepals. Banner nearly as 

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

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



1. U. EUROP.35US, Linn. Sp. PI. 741 (1753). Three to six feet high, the 

 numerous short branchlets villous, ending in a stoat spine : lower leaves 

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

 fl. 1^ in. long, yellow, solitary but often crowded on the branchlets ; calyx 

 villous. — Spontaneous here and there about San Francisco, where it has 

 escaped from cultivation. Highly ornamental when in flower. Feb. — Apr, 



15. SPARTIUM, Lohelius (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. Calyx 

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

 erect ; keel acuminate. Stamens monadelphous. Pod compressed. 



