126 ELEMENTS OF BOTANY. 



3. V. viLLOSA L. Hairy Vetcfi. Annual; stem diffuse, 

 angled, pubescent, 4-10 ft. long; leaves short-petioled ; stipules 

 large; leaflets 10-20 pairs, cuneiform, refuse and mucronate at the 

 apex, pubescent; flowers blue, 1 in. long, in large axillary racemes; 

 legume oblong, 3-6-seeded. March-May. Introduced and culti- 

 vated for winter pastures. 



XX. LATHYRUS. 



Like Vicia, excepting that the style is bearded on the side 

 toward the standard. 



1. L. PusiLLus Ell. Dwarf Vetch. Annual; stem slender, 

 erect or reclining, 10-15 in. long; leaves short-petioled; stipules 

 sagittate ; leaflets 2, linear or linear-lanceolate, smooth ; peduncles 

 longer than the leaves, 1-2-flowered; flowers purple; calyx teeth 

 nearly equal; legume long and slender, 1 0-1 5-seeded. February- 

 May. On sandy soil, common along fences. 



2. L. vENOSus MuhL Veiny Vetch. Perennial; stem stout, 

 prominently angled, climbing or reclining, 2-5 ft. long; leaves 

 short-petioled ; stipules large, lanceolate ; leaflets 5-7 pairs, broadly 

 ovate, obtuse, mucronate ; peduncles nearly as long as the leaves, 

 many-flowered; flowers purple, | in. long; calyx teeth very unequal; 

 pod linear, veined, 4-6-seeded. April- June. Shady banks. 



XXI. BRADBURYA. 



Perennial herbs ; stems twining or prostrate ; leaves 3- 

 foliate ; stipules persistent ; flowers large, axillary, racemed 

 or solitary ; calyx short, 5-toothed, the two upper teeth partly 

 united; standard large, erect, orbicular, emarginate, spurred 

 on the back ; stamens monadelphous below ; style smooth ; 

 legume sessile, linear, many-seeded. 



B. ViRGiNiANA (L.) Kuntze. Spurred Butterfly Pea. Stem 

 slender, much-ln-anched, rough with hooked pubescence, 2-5 ft. 

 long; leaflets ovate, acute at the apex, rounded at the base, reticu- 

 late-veined, stipellate, the upper one long-stalked ; peduncles as long 

 as the petioles, often in pairs, 1-4-flowered; flowers pink-purple, 1- 

 li in. broad, short-pediceled ; calyx lobes subulate; legume linear, 

 curved, the margin thickened, many-seeded, 4-6 in. long. JNIay- 

 September. Common on dry, sandy soil. 



