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. CYTISTJS 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. Pod 

 compressed, several-seeded. 



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

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

 15-20 mm. 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. (BUR-CLOVER.) Slender, much 

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

 date, toothed above ; flowers small, yellow, 2-3 or 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 mm. long, den- 



