LEGUMINOSiE. (PULSE FAMILY.) 105 



equal ; legume scymitar-shaped, acute — South Florida. — Stem 2° - 3° long. 

 Leaflets 1^'- 2' long. Racemes I' -2' long. Flowers small. Legume I'-lJ' 

 long, tapering at the base. 



■*- t- Calyx i-parted, nearly as long as the corolla, the lobes linear or lanceolate, 

 nearly equal : sterns twining or erect. 



4. R. menispermoidea, DC. Stems several from one root, prostrate 

 or twining, downy; stipules ovate-lanceolate ; leaflets solitary, reniform, tomen- 

 tose ; peduncles rarely as long as the petiole, with few crowded flowers at the 

 summit ; calyx deeply parted, the lanceolate acute or acuminate lobes nearly 

 equal ; legume oblong, acute, tomentose, 2-seeded. — Charlotte Harbor, South 

 Florida, Blodgett. — Stems 2° -3° long. Leaflets l'-2' in diameter. 



5. R. tomentosa, Torr. & Gray. Leaflets 1 or 3, roundish or ovate ; ra- 

 cemes dense-flowered ; legume oblong. 



Var. monophylla, Torr. & Gray. Pubescent ; stem low (3' - 6'), erect ; 

 leaflets mostly solitary, reniform or orbicular ; racemes very short, the upper- 

 most clustered. (Glycine simplicifolia, Ell.) 



Var. erecta, Torr. & Gray. Velvety; stem erect (1°-T^°); leaflets 3, 

 oblong or roundish, sometimes acute ; racemes many-flowered, the tei-minal one 

 often elongated. (G. erecta and G. moUissima, Ell.) 



Var. volubilis, Torr. & Gray. Haiiy ; stem twining, angled ; lowest leaves 

 simple, the upper ones trifoliolate ; leaflets 3, roundish or ovate, often' angular 

 on the margins ; racemes very short, few-flowered. (G. tomentosa, Ell.) 



Dry sandy soil, Florida to North Carolina, and west to Mississippi. June - 

 August. 



* * Stem tall, erect, with long virgate brnnches : flowers solitary or by pairs, in ihe 

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



6. R. galactoides. Stem bushy, purplish, closely pubescent ; leaves 

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

 cent ; flowers mostly longer than the leaves, yellow, the vexillum reddish exter- 

 nally ; legume oblong, 2-sccded. (Pitcheria galactoides, Nittt.) — Dry sand 

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

 long. Legume |' long. 



27. APIOS, Boorh. 



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&rl). 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, Moench. — Swamps, Florida to Mississippi, and north- 

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

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

 than the leaves. Seeds black, separated by loose cellular tissue. 



