146 LEGUMINOSJE. (PULSE FAMILY.) 



than the wings, incurved, acute. Stamens monaclelphous 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, with mostly pinnately 

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

 bractlets opposite, striate. (Derivation recondite.) 



1. C. Mariana, L. Low, 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. AMPHICARPJEA, Ell. HOG PEA-NUT. 



Flowers 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-pQtals similar, almost straight ; the standard partly folded round them. 

 Stamens diadelphous. Style beardless. Pods of the upper 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 piunately 3-foliolate ; leaflets rhombic-ovate, sti- 

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

 round, partly clasping, striate, as well as the stipules. (Name from a/j.(pi, both, 

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



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

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

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

 woodlands, common. Aug., Sept. 



2. A. Pitcheri, 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. The upper flowers more com- 

 monly fertile ; apparently producing subterranean fruit but rarely. 



38. GAL ACT I A, P. Browne. MILK-PEA. 



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

 incurved. Stamens diadelphous or nearly so. Style beardless. Pod linear, 

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

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

 ally 3, stipellate. Flowers in somewhat interrupted or knotty racemes, purplish ; 

 in summer. (Name from yd \a, -OKTOS, milk ; some species being said to yield 

 a milky juice, which is unlikely.) 



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

 or ovate-oblong, sometimes slightly hairy beneath ; racemes short, 4- 8-flow r ered ; 

 pods somewhat hairy. Sandy woods, southern N. Y. to Va., Fla., and Miss. 



2. G. pildsa, Ell. Stems (decumbent and somewhat twining) and leaves 

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

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



