LEGUMINOS^. (pulse FAMILY.) 105 



equal; lepjume scymitar-shaped, acute — South Florida. — Stem 2° -3° Ion". 

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

 long, tapering at the base. 



•t- -1- Calyx A-parted, nearly us long as the corolla, the lobes linear or lanceolate, 

 ticarly equal : stems 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, BloJgett. — Stems 2° -3° long. Leaflets l'-2' in diameter. 



.5. R. toraentosa, Ton-. & Gray. Leaflets 1 or 3, roundish or ovate ; ra- 

 cemes dense-flowered ; legume oblong. 



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

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

 most clustered. (Glycine simplicifolia. Ell.) 



Var. erecta, Ton-. & Gray. Velvety; stem erect (l°-U-°); leaflets 3, 

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

 often elongated. (G. ereeta 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, icitli long virgate hrnnchrs : floiirrs solitnry or hy pairs, in the 

 arils of the upper leaves : caly.v 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 vcxillum reddish exter- 

 nally; legume oblong, 2-seedcd. (Pitchcria 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, Mcench. — Swamps, Florida to Mississippi, and north- 

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

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

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



