BOTANICAL GAZETTE. 131 



* Pedicels slender, bibracteolate above the middle ; stipules, 

 bracts and bracteoles persistent. 



4. B. Lecoiitii, Torr. and Gray. Pubescent; calyx lobes short tri- 

 angular. Georgia and Florida. 



5. B. cahjcosa, Canby. Glabrous (except the somewhat ciliate fo- 

 liage, (fee), calyx lobes foliaceous, almost as long as the corolla, 

 persistent and enlarging in fruit. Legumes compressed, ovate, 

 acuminate, about the length of, or shorter than the calyx. East 

 Florida. (Miss Reynolds, Miss Floyd.) A ver}^ remarkable species. 



** Pedicels not bibracteolate. 

 -♦- Racemes very many, short and loose, terminal, often leafy at 

 base, i. e., some of the lower flowers axillary. 



6. B. tinctoria, R. Brown. Very smooth with small (+ in. to 1^ in. 

 long) wedge obovate leaflets and small bright yellow flowers. Can- 

 ada to Florida and west to the Mississippi. 



7. B. lanceolata. Elliott. Stout, pubescent when young, leaflets ob- 

 lanceolate (2 to 3 in. long); flowers large, dull yellow. North 

 Carolina to Florida and westward. 



var. unijiora, Torr. and Gray. (B. uniflora, Spreng.) Leaflets more 

 cuneate obovate, firmer in texture, often retuse; flowers nearly all 

 axillary. Arkansas. 



-. — t- Racemes fewer, opposite the leaves, the flowers there- 

 fore never axillary, 

 ■n- Legume spherical, its walls very thick and bony. 



8. B. sph<Trocarpa., Nuttall. Arkansas and Texas. 



■»-++^- Legumes oblong, the walls thin but firm. 

 == Legumes flattened contrary to the septa. 



9. B. alba, R. Brown. Legumes six to eight times longer than broad ; 

 flowers white. North Carolina to Florida and westward. 



10. B. Serense. M, A. Curtis. Legumes one half shorter; flowers 

 bright yellow. Sand hills, South Carolina. 



=== Legumes much inflated, blunt, nearly cylindrical. 



11. B. megacarpa, Chapm. Racemes short, somewhat numerous, 

 sometimes appearing as if terminal; flowers bright yellow; leaflets 

 of the long petioled leaves elliptical. Florida and Gsorgia. 



12. jB. leucantha, Torr. and Gray. Racemes few, very long; flowers 

 nearly white ; leaves short petioled with oblanceolate leaflets ; stip- 

 ules deciduous ; style short, about as long as the linear acute ovary. 

 Upper Canada to Michigan and thence to South Carolina and Flori- 

 da and westward. 



