146 LEGUMINOSiE. (PULSE FAMILY.) 



than the wings, incurved, acute. Stamens monadelphous below. Style bearded 

 down the inner face. Pod linear-oblong, flattish, knotty, several-seeded, pointed 

 with the base of the style. — Erect or twining perennials, Avith mostly piuuately 

 3-f oliolate stipellate leaves, and very large flowers. Peduncles 1 - 3-flowered ; 

 bractlets opposite, striate. (Derivation recondite.) 



1. C. Mariana, L. Loav, ascending or twining, smooth ; leaflets oblong- 

 ovate or ovate-lanceolate; stipules and bracts awl-shaped; peduncles short; 

 the showy pale-blue flowers 2' long. — Dry banks, N. Y. to Va. and Fla.,.west 

 to Mo. and Tex. 



37. AMPHICABPiEA, Ell. Hog Pea-nut. 



FloAvers of 2 kinds ; those of the racemes from the upper branches perfect, 

 but seldom ripening fruit ; those near the base and on filiform creeping branches 

 with the corolla none or rudimentary, and few free stamens, but fruitful. Ca- 

 lyx about equally 4- (rarely 5-) toothed ; bractlets none or minute. Keel and 

 wing-petals similar, almost straight ; the standard partly folded round them. 

 Stamens diadelphous. Style beardless. Pods of the vipper flowers, when 

 formed, somewhat scymetar-shaped, stipitate, 3-4-seeded; of the lower ones 

 commonly subterranean and fleshy, obovate or pear-shaped, ripening usually 

 but one large seed. — Low and slender perennials; the twining stems clothed 

 with brownish hairs. Leaves pinnately 3-foliolate ; leaflets rhombic-ovate, sti- 

 pellate. Flowers in simple or compound racemes, purplish. Bracts persistent, 

 round, partly clasping, striate, as well as the stij)ules. (Name from ajxcpi, loth, 

 and KapiTos, fruit, in allusion to the two kinds of pods.) 



1. A. monoica, Nutt. Leaflets thin, j-2' long; racemes nodding; 

 calyx of upper flowers 2" long, the ovary glabrous except the hairy margin ; 

 pod 1' long; ovary and pod of the rudimentary flowers hairy. — Kich damp 

 woodlands, common. Aug., Sept. 



2. A. Piteheri, Torr. & Gray. Leaflets usually 2 -4' long; rhachis of 

 the racemes usually villous; calyx 3" long, the teeth acuminate : ovary hairy. 

 — Western N. Y. to 111., Mo., La., and Tex. Tlie upper flowers more com- 

 m6nly*fertile ; apparently producing subterranean fruit but rarely. 



38. GALACTIA, P. Browne. Milk-Pea. 



Calyx 4-cleft ; the lobes acute, the upper one broadest, entire. Keel scarcely 

 incurved. Stamens diadelphous or nearly so. Style be«ardless. Pod linear, 

 flat, several-seeded (some few of them rarely partly subterranean and fleshy or 

 deformed) . — Low, mostly prostrate or tAvining perennial herbs. Leaflets usu- 

 ally 3, stipellate. FloAvers in someAvhat interrupted or knotty racemes, pur})lish ; 

 in summer. (Name from yaXa, -axTos, milk ; some species being said to yield 

 a milky juice, Avhich is unlikely.) 



1. G. glabella, Michx. Stems nearhj smooth, prostrate; leaflets elliptical 

 or ovate-oblong, sometimes slightly hairy beneath ; racemes short, 4-8-floAvered ; 

 jjods somewhat hairij. — Sandy Avoods, southern N. Y. to Va., Fla., and Miss. 



2. G. pilosa, Ell. Stems (decumbent and someAvhat tAvining) and leaves 

 beneath soft-downy and hoarij ; leaflets oval ; racemes many -flowered , pods very 

 downy. (G. mollis, Gray, Manual; not Michx.) — Penn. to Fla. and Miss. 



