100 LEGUMINOS-<E. (PULSE FAMILY.) 



1 . Z. tetr aphylla, Michx. Perennial, smooth or downy ; leaflets 4, lance- 

 olate or oblong-obovate ; racemes 3 - 9-flowered, much longer than the leaves ; 

 the flowers distant and almost concealed by the large ovate bracts ; legume his- 

 pid, 3- 4-jointcd. Dry sandy soil, Florida to North Carolina, and westward. 

 June -August. Stem 2 long, prostrate. 



22. STYLOSANTHES, Swartz. 



Flowers of two kinds : one kind perfect, but sterile ; the other destitute of 

 calyx, corolla, and stamens, and fertile. Calyx 2-bracted, 2-lipped, 5-cleft ; the 

 tube long and slender. Corolla inserted on the throat of the calyx. Keel en- 

 tire at the apex. Stamens monadelphous, with the alternate anthers linear and 

 ovate. Style of the fertile flower hooked. Legume veiny, 1 - 2-jointed, the lower 

 joint empty. Low herbs. Leaves trifoliolate. Stipules united with the peti- 

 oles. Flowers in a short and dense terminal spike. 



1. S. elatior, Swartz. Perennial ; stem mostly erect, 6' -12' high, pu- 

 bescent in lines, or sometimes hispid ; leaflets rigid, lanceolate, strongly veined ; 

 stipules sheathing ; spike few-flowered ; bracts bristly; flowers yellow. (S. his- 

 pida, Michx.} Sandy pine barrens, Florida and northward. June - August. 



23. CHAPMANNIA, Torr. & Gray. 



Flowers nearly as in Stylosanthes. Corolla inserted on the throat of the 

 calyx. Keel 2-cleft at the apex. Anthers alike, oblong. Legume hispid, 1-3- 

 jointed. A viscid and hirsute branching herb, with unequally pinnate leaves, 

 small and free stipules, and small yellow flowers in terminal racemes. 



1. C. Floridana, Torr. & Gray. East Florida. May. Stem slender, 

 2 - 3 high. Leaflets 3-7, oblong. Racemes often branching, few-flowered. 



24. LESPEDEZA, Michx. BUSH-CLOVER. 



Calyx 2-bracted, 5-cleft ; the teeth subulate. Corolla inserted on the base of 

 the calyx. Stamens diadelphous (9 & 1). Anthers alike. Legume small, len- 

 ticular, indehiscent, 1-secded. Perennial herbs, with trifoliolate leaves, and 

 small flowers in axillary racemes or spikes. 



* Flowers of two kinds, viz. perfect, but mostly sterile, borne in spikes or racemes, 

 and fertile, but destitute of corolla and stamens ; the latter commonly in sessile clus- 

 ters : corolla purple, longer than the calyx. 



1. L. repens, Torr. & Gray. Stem slender, prostrate ; leaflets small, oval, 

 mostly emarginate, the petiole very short, or as long as the lateral leaflets ; ra- 

 cemes few-flowered, on filiform peduncles much longer than the leaves ; legume 

 roundish. (L. procumbens, Michx.) Dry sandy soil, Florida to Mississippi, 

 and northward. August. Plant l-2 long, smooth or tomentose. 



2. L. violacea, Pcrs. Stem erect or spreading ; leaflets varying from el- 

 liptical to linear, pubescent with appressed hairs beneath ; fertile flowers in 

 axillary clusters ; legume ovate* smooth, or with scattered appressed hairs, much 

 longer than the calyx. 



