LEGUMINOS.E. (pulse FAMILY.) 115 



6. R. reticulata, DC? Stems several, prostrate, villous; leaves trifoli- 

 olate ; leaflets thin, silky, oval or orbicular, slightly cordate, reticulate, 2' -3' 

 loug, the lateral oues oblique ; racemes single, or in unequal pairs, loosely 4- 

 10-flowered, 2' -3' long ; calyx lobes lanceolate, as long as the corolla. — Dry 

 sandy soil, Orange County, Florida. July. {Fred. L. Lewton.) — Stems 2° 

 loug. Legume not seen. 



7. R. erecta, DC. Yelvety-tomentose ; stem erect, simple or branched; 

 leaves trifoliolate ; leaflets oblong-ovate, reticulate, acute ; stipules subulate, 

 persistent ; racemes sessile, densely many-flowered ; legume oblong. — Light 

 dry soil. June -August. — Stem 1°- 2° high. Leaflets 1'- 2' long. Legume 

 8" - 9" long. 



8. R. reniformis, DC. Villous; stem 2' -8' high; leaves 1-foliolate, or- 

 bicular or reniform, hirsute beneath ; stipules ovate-lanceolate, racemes nearly 

 sessile, cluster-like ; legume oblong. — Dry sandy soil in the lower districts. 

 May - July. 



9. R. mollissima, Shuttlw. Velvety tomentose ; stem simple, 1° high ; 

 leaves trifoliolate ; leaflets ovate, acute, I' long ; stipules deciduous ; racemes 

 terminal, .solitary, 4' - 8' long, loosely many-flowered ; corolla longer than the 

 calyx, — Dry sandy soil near the coast, Georgia and East Florida. Bare. 



* * Stem tall, erect, icith Jong vlrgate branches : flowers solitary or bij pairs, in the 

 axils of the upper leaves : calyx deeply 4-cleJl, shorter than the corolla. 



10. R. galactioides, Endl. Stem l)ushy, purplish, closely pubescent ; 

 leaves very small, almost sessile ; leaflets 3, oval or obovate, rigid, reticulate, 

 pubescent ; flowers mostly longer than the leaves, yellow, the vexillum reddish 

 externally; legume oblong, 2-seeded. (Pitcheria, Nutt.) — Dry sandy soil, 

 Florida and Alabama. June. — Stem 2° -4° high. Leaflets 3'"'- 9" long. 

 Legume f long. 



26. APIOS, Boerh. Geound-Nut. 



Calyx somewhat 2-lipped ; the lateral teeth nearly obsolete, the lowest one 

 longest. Vexillum very broad, reflexed ; the keel at length twisted. Stamens 

 diadelphous (9 & 1 ). Legume nearly terete, many-seeded. — A smooth peren- 

 nial twining herb, with unequally pinnate leaves, and brownish purple flowers 

 in dense axillary racemes. 



1. A. tuberosa, Mcench. — Swamps, Florida to Mississipin, and north- 

 ward. July and August. — Root bearing small edible tubers. Stem twining 

 high. Leaflets .5-7, ovate or ovate-lanceolate. Eacemes often by pairs, 

 shorter tlian the leaves. Seeds black, separated by loose cellular tissue. 



27. PHASEOLUS, L. Kidnet-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 falcate, 

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

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

 axillary peduncles. 



