LEGUMINOS^E. (PULSE FAMILY.) 105 



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

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

 long, tapering at the base. 



- *- Calyx 4=-parted, nearly as long as the corolla, the lobes linear or lanceolate, 

 nearly equal : stems twining or erect. 



4. B. 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 1 ' - 2' in diameter. 



5. B. 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 (1-1|); leaflets 3, 

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

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



Var. volubilis, Torr. & Gray. Hairy ; 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 branches : flowers solitary or by pairs, in the 

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



6. B. 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-seeded. (Pitcheria galactoides, Nutt.) Dry sand 

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

 long. Legume |' long. 



27. APIOS, Boerh. 



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, Moench. Swamps, Florida to Mississippi, and north- 

 ward. July and August. Boot 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. 



