10G LEGUMINOSjE. (pulse family.) 



28. PHASEOLUS, L. Kidney-Bean. 

 Calyx 5-toothed, the two upper teeth more or less united. Keel of the corolla 

 spirally coiled or twisted. Stamens diadelphous. Legume linear or faleatc, 

 few- many-seeded. — Twining or prostrate herbs, with trifoliolate stipellate 

 leaves. Flowers commonly large, racemed, or clustered at the summit of the 

 axillary peduncles. 



* Flowers scattered in long racemes : legumes sci/mi tar-shaped. 



1. P. perennis, Walt. Stem climbing, pubescent; leaflets ovate, acute, 

 entire, membranaceous ; racemes often branching, twice as long as the leaves. — 

 Low woods and margins of fields, Florida to Mississippi, and northward. July 

 and August. 1J. — Leaflets 2' -4' long. Flowers purple. 



2. P. sinuatus, Nutt. Stem prostrate, smoothish ; leaflets small (1' long), 

 roundish or 3-lobed, strongly reticulate, rather rigid ; racemes 6-8 times as long 

 as the leaves, solitary, simple. — Dry sand ridges in the pine barrens. Florida. 

 July and August. 1J. — Stem 8°- 12° long. Flowers pale purple. 



* * Flowers clustered at the summit of the peduncles : legume linear, nearly terete : 

 seed scurfy. (Strophostyles, Ell.) 



3. P. diversifolius, Pers. Annual ; stems prostrate or trailing, rough- 

 hairy ; leaflets ovate, entire or 2 - 3-lobed ; peduncles twice as long as the leaves. 

 — Sandy soil, Florida to Mississippi, and northward. June - September. — 

 Stems 2° - 4° long. Corolla purple, withering greenish. 



4. P. helvolus, L. Perennial, smooth or hairy ; stems prostrate, leaflets 

 varying from ovate to oblong-linear, rarely 3-lobed ; peduncles 3-G times as 

 long as the leaves. — "Woods and margins of fields, Florida to Mississippi, and 

 northward. June - September. — Corolla pale purple. 



29. VIGNA, Sayi. 



Calyx 4-toothcd, the upper tooth broader, entire or 2-clcft. Vcxillnm depressed- 

 orbicular, with thickened knobs near the base. Keel not twisted. Stamens in- 

 cluded in the keel, diadelphous, and with the style bent upward. Style hairy 

 above, appendaged below the stigma. Legume nearly terete, somewhat torulose, 

 the seeds separated by cellular tissue. — Twining herbs, with trifoliolate leaves, 

 and racemose axillary flowers. 



1. V. glabra, Savi. Annual, hirsute; leaflets ovate or ovate-lanceolate j 



racemes on -tout peduncles longer than the leaves; (lowers yellow, crowded ; 



legume hirsute. (Dolichos luteolus, Jacq.) — Brackish marshes, Florida to 



South Carolina, and west to MissisMppi. July - September. 



30. ERYTHRINA, L. 



Calyx tubular-campannlate, truncate, toothless. Vexiflum narrow, Btraight, 

 elongated. Keel and wings very small. Stamens and style partly exserted. 

 Legume stipitate, torulose, partly dehiscent. — Trees, Bhrubs, <>r rarely herbs, 

 often armed with prickl I trifoliolate, the terminal leaflet long-petiota? 



late. Flow, rs showy, BCarlet, in long racemes. 



