Description of Native Vines 



63. Various-leaved Kidney-bean. (Phaseolus helvolus.) 

 Leaf : pinnate, alternate ; leaflets, 3, ^'-3' long, ovate to long- 

 ovate, entire or 3-lobed. Flower ; greenish-white, red- or pur- 

 ple-tinged, sweet-pea-shaped (calyx 5-toothed), few-clustered on 

 long stem ; August, September ; pod about straight. Massa- 

 chusetts, and south, on coast, and along Great Lakes : twining 

 and trailing, herbaceous. 



64. Umbelled Kidney-bean. (Phaseolus umbellatus.) 

 Leaf : pinnate, alternate ; leaflets, 3, about i' long, ovate to 

 lance-shaped, rarely lobed. Flower : sweet-pea-shaped (calyx 

 5-toothed), almost stemless, few-clustered ; pod about straight, 

 nearly 2' long, very narrow. Long Island, south and west, in 

 sandy soil ; twining or trailing, herbaceous. 



65. Spurred Butterfly-pea. (Centrosema virginianum.) 

 Leaf: pinnate, alternate; leaflets, 3, i' long or more, long 

 ovate to linear, glossy ; stalk rough-hairy. Flower : violet 

 pea-shaped, i' long (spur near base, calyx 5-toothed), 1-4-clus- 

 tered ; July ; pod straight, 4'-5'. Maryland, and south ; twining, 

 herbaceous. 



66. Butterfly-pea. (Clitoria mariana.) 



Leaf : pinnate, alternate ; leaflets, 3, i' long, long-ovate to 

 lance-shaped. Flower : blue or purple, with some whitish, 

 showy, 2' long, pea-shaped, not spurred (calyx 5-toothed), 1-3- 

 clustered ; July, August; pod i ^'-2', narrow, flat. East New 

 York, New Jersey, south and southwest ; twining, sometimes 

 creeping, woody at base. 



67. Bush-trefoil. Tick-trefoil. (Desmodium rotundi- 

 folium.) 

 Leaf : pinnate, alternate ; leaflets, 3, 1-2' long, roundish, en- 

 tire , stipules prominent, ovate, pointed; leaf and stalk hairy. 

 Flower : purple, pea-shaped (calyx 5-toothed), few-clustered ; 

 August ; pod 2-6-jointed, edge deeply lobed, covered with hooked 

 hairs ; trailing, herbaceous. (PI. VI.) 



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