200 THE FLORA. 



10. CAS'SIA. Senna. 



Sepals 5, scarcely united at base, nearly equal. Petals 5, unequal, Dm 

 not papilionaceous. Stamens 10, distinct, 3 upper anthers often sterile, 3 

 lower ones beaked. Legume long, many-seeded. Leaves simply and 

 abruptly pinnate, mostly with a gland on the petiole. Flowers yellow. 

 July, Aug. 



1 Racemes axillary. 3 of the anthers imperfect, 7 of them perfect 1, 8 



If Racemes above the axils. Anthers all perfect. Stem l-2f. high.... 4, 5 



1 C. obtusifo'lia. Blunt S. Leaflets 4-6, obtuse. Stem l-3f. high. S. 



2 O. occidenta'lis. Western S. Leaflets 6-12, acute. Stem 4-6f. high. S. 



8 O. Marilan'dica. American S. Leaflets 12-18, mucronate. Stems 5f. high. 



4 O. Chamscris'ta. Sensitive Pea. Anthers 10, unlike. Fls. large. Lfts. 16--24. 



5 C. nio'titans. Sensitive S. Anthers 5, alike. Fls. small. Leaflets 12-30. 



11. MEDICA'GO. Medick. 



Calyx 5-cleft. Corolla deciduous. Banner free and remote from the 

 keel. Legume variously curved, coiled or twisted. Leaves pinuately 

 3-foliate, denticulate. From Europe. May-July. 



* Pods smooth, not spiny Nos. 1, 2, 3. 



* Pods spirty, spiral ; spines in a double row. Fls. yellow Nos. 4, 5, 6. 



1 M. sati'va. Lucerne. Smooth, erect. Fls. purple, large. Pods spiral. 



2 M. lupuli'na. None-such. Downy, prostrate. Fls. yellow. Pod reniform. 



3 M. scutella'ta. Snails. Fls. yellow. Pod coiled like a snail-shell. 



4 M. denticnla'ta. Leaflets obovate. Slip, bristly, gashed. Pod loose-coiled. 



5 M. macula'ta. Leaflets obcordate, with a purple spot. Pod close-coiled. 



6 M. intertexta. Hedge-hog. Leaflets rhombic. Stipules gashed. Spines close. 



12. LATH'YRUS. Vetchling. 



Calyx lobes sbort. Style flat, bent, widened laterally above, bearded 

 along the inner side (next the free stamen). Pod oblong, several-seeded. 

 Trailing or climbing. Leaves equally pinnate, produced into tendrils. 

 Peduncles axillary. 



* Leaflets a single pair. Garden species, from Europe.. ..Nos. 1, 2. 



* Leaflets commonly 3-pairs.. ..Nos. 3, 4, 5. 



* Leaflets commonly 5-pairs. Peduncle many-flowered.... Nos. 6, 7. 



1 L. latifo'lins. Everlasting Pea. Stem winged. Flowers large, pink, many on each 



long peduncle. A variety has white flowers. If 



2 L cdora'tns. Sweet Pea. Peduncle 2-flowered, flowers red and white. 



3 L. ochroleu'cus. Flowers cream-white, 7-10. Stipules half-cordate. 



4 L. palus'tris. Flowers blue-purple, 2 or 3. Stipules half-sagittate. 



' 5 L. myrtifo lius. Flowers pale-purple, 5 together. Stipules ovate, entire. 



