72 FAM. 93. 



D. punicea. A small ornamental tree with orange-red or scarlet flowers. Sum- 

 mer or Spring. 

 15. Pods several-seeded, with thick margins; — tall herbs with flowers 

 in axillary racemes; calyx 2-bracted, equally 5-toothed; vexillum 

 broad, wings curved, keel blunt, ______ Sesbania 



S. macrocarpa. Leaflets 20-70, oblong; racemes shorter than the leaves; calyx 

 membranous; corolla yellow, spotted with purple. Moist soil. Summer 

 and Fall. 



15. Pods 2-seeded, with thin margins; — tall herbs with flowers in axillary 



racemes; calyx 5-toothed; vexillum reniform, keel-petals co- 

 herent above the middle; pod with outer and inner walls dis- 

 tinct, __----____ Glottidium 

 G. vesicarium (Floridanum), Coffee-Bean. Leaflets 25-50, mucronate; racemes 

 shorter than the leaves; corolla yellow. — A variety, atrorubrum has black- 

 purple corolla. 



16. Leaves palmately 3-7 foliate or pinnately 3-foliate; — herbs or shrubs 



with flowers in axillary peduncled spikes or racemes; calyx- 

 lobes equal or the lower longer; vexillum broad, keel short; pod 

 broad. Sandy pine-land. Spring and Summer. - - Psoralea 



P. lupinellus. Leaves palmately 5-7 foliate, leaflets linear; racemes shorter 

 than the peduncles; corolla blue or violet; pods lunate with curved beak. 



P. canescens. Leaflets 3, or on the upper leaves 1, oval to roundish; racemes 

 longer than the leaves; calyx-tube inflated on the upper side; corolla blue, 

 turning greenish; pods with straight beak. 



P. pedunculata (melilotoides). Leaflets 3, lanceolate; peduncles 2-3 times as 

 long as the leaves and longer than the racemes; upper calyx-lobes lanceo- 

 late; corolla purplish; pods roundish. 



16. Leaves pinnately 5-many foliate, _______ 17 



17. Stamens 10, corolla consisting of a single petal (vexillum); — shrubs 



with small flowers in spike-like racemes; calyx 5-lobed; stamens 



united at the base, exserted, _--__-- Amorpha 



A. herbacea. Grayish-pubescent low shrub with purple branches; leaflets 11-37, 

 elliptic or oblong; racemes clustered; calyx-lobes short, unequal; vexillum 

 broadly-spatulate, surrounding the stamens, white or bluish to violet-pur- 

 ple; pod small, with a slender nearly erect beak, glandular. Sandy soil. 

 Spring. 



A. fruticosa. Young plants tomentose; leaflets 11-25, oval or oblong; racemes 

 clustered; calyx-lobes unequal; vexillum round-ovate, blue; pod curved, 

 marked with large glands. Riverbanks. Early Summer. 



17. Stamens 5, monadelphous, _________ 18 



18. Calyx-lobes shorter than the tube; spikes without involucre; — vex- 



illum broad; wings and keel similar, - Petalostemon, Prairie-clover 



P. carneus. Glabrous, much-branched herbs; leaflets 5-7, linear; corolla white 

 or pink; spikes mostly cylindric; bracts lanceolate. Dry sandy soil. Sum- 

 mer. 

 P. Feayi. Glabrous, branched especially above; leaflets 3-7, linear; corolla laven- 

 der; spikes subglobose; bracts inconspicuous. Sandy soil. Summer. 

 18. Calyx-lobes longer than the tube; spikes with involucre; — flowers 

 in corymbose spikes; calyx pubescent, lobes bristle-like; vexil- 

 lum broad; wings and keel similar, their claws adnate to the 

 stamen-tube, ________ Kuhnistera 



K. pinna ta (Petalostemon corymbosum. Leaflets 3-15, linear; spikes resemb- 



