210 Leguminosae 



lip cleft, lower entire; petals blue or lavender; standard with 

 permanent yellow spot; keel naked. 



Common on the sand-dunes along the seashore. Flowering nearly the 

 year round. 



4. CYTISUS L. Broom. 



Shrubs with green, leafy or sometimes nearly leafless, 

 more or less angular branches. Leaves palmately or 

 pinnately 3-foliate ; leaflets entire. Flowers solitary or 

 racemose, usually yellow. Calyx bilabiate. Petals 

 broad ; keel obtuse. Stamens monadelphous. l'< >< 1 

 ei n 1 1 pressed, several-seedei 1 . 



1. C. Canariensis (L.) Link. Much branched, 1-2 m. high, 

 soft pubescent, leafy; leaflets 6-12 mm. long; flowers yellow, 

 15-20 nun. long:, fragrant, in terminal racemes; upper calyx-lip 

 deeply 3-toothed, the lower slightly so. 



An occasional escape from cultivation. A native of the Old World. 



5. MEDICAGO L. 



Annual or perennial herbs with pinnately 3-foliate 

 Leaves and 2-3 or many flowers in axillary peduncles. 

 Stipules adnate, often Laciniate. Petals free from the 



diadelphoUS stamens, deciduous. Pod 1- several-seeded, 



coiled into a spiral. 



1. M. sativa L. (Alfalfa.) Stems erect from a deep perennial 

 tap-root, glabrous, 5-10 dm. high; leaflets cuneate-oblong to ob- 

 lanceolate, toothed above ; flowers many in a short raceme, violet : 

 pod spirally coiled, unarmed. 



An occasional escape. Native of Europe. 



2. M. denticulata Willd. (Bi k-clovkr.) Slender, much 

 branched, decumbent, glabrous annual; leaflets obovate to obcor- 

 date, toothed above; flowers small, yellow, 2-3 <>r rarely more on 

 axillary peduncles; pods coiled, their margins armed with hooked 



prickles. 



Everywhere common. Native of Europe. 



3. M. apiculata Willd. stems branched from the base, 

 spreading, 3-6 dm. long; Leaflets deltoid, 10-12 n\n\. long, den- 



