PAriLIONACEJE. 63 



Gknus XIV. AMPHICARPA. 



Calyx 4-toothe(l, the two upper sepals united nearly or quite 

 lo the summit, tuhuliir. slightly gihhous at the base, destitute 

 of bracts, VexiUum broad, slightly auricled at the base, ap- 

 pressed. Keel and wing petals nearly straight, and nearly 

 equal, unguiculate, lamina oblong. Stamens diadelphous. — 

 Ovaru 9ti[)ed, wiih 2— 4-ovules. Style glabrous, filiform. Le- 

 owiw comj)rossed, stipitate, 2— 4 seeded. The flowers of this 

 genus, towards the summit of the stem, usually ditTer from 

 those near the base. The upper ones usually pertect in all 

 their parls. while the lower sometimes are wanting in a corolla 

 and apart of the stamens; but the latter are the ones that 

 usuallv mature the fruit. Climbing, herbaceous, plants. 



1. A. M'"»NoiCA. R(X)/ creeping. Sfem slender, climbing over small shrubs, 

 retrorsely Ijir-uie, angular. I^avca ternaie, ovate, or rhombic-ovate, thin, 

 gla -■ hairy, a little oblique. Floivtrs in pendulous racemes, on filiform 



pet Oj/i/x hairy at the base, 4-toothed, acuminate. Legume smooth, 



3— 4-W'iK'li. 



White, tinged wiili violet. '21-. June — Sept. Rich lands, common. 2-5 ft. 



GE.VUS XV. SESBANIA. 



Ca/yx 5-toothed, teeth neatly cqjal, with 2 caducous bracte- 

 oles at the has?. Ffx/Z/uwi roundish, with 2 appendages on its 

 claw. Stamens diadelphous. L"gumr, long, (10-12 iu.) linear, 

 slender, cylindrical or compressed, many seeded. Seeds cyl- 

 iudricaUoblong. Herbaceous plants, with pinnate leaves. 



1. S. Machooarpa. »^/CTn with expanding branches, glabrous, herbaceous. 

 Leaves pinnate 10--'23 pair. I.Auifiet$ Imear-eliptical. glabrous, entire, slightly 

 mucronate. Flowers \v\ axillary racemes, few flowered, shorter than the 

 leaves. Cahx pulRsrent along the margin, two upper teeth reflected. VeX' 

 Ulum reflected. Lc;runie somewhat 4 angled alx)ut 12 inches long. 



Ge-vus XVI. GLOTTIDIUM. 



Cafyx 5- toothed, teeth nearly equal, small, obtuse. Vexillum 

 short, broad, slightly unguiculate, reniform, .keel petals united 

 at the middle. L^^Mm^, eliptical-oblong, stipitate, compressed, 

 2-seeded. Seeds compressed. 



1. G. Florid.a.vum. Stem glabrous. I^nveg equally pinnate 10--20 pairs. 

 Pdioie* terminated by a brittle. Ijeajlets of)lonff-lincar, mucronate, glabrous. 

 Jiacemes 4--S tl^wered. Petal nearly equal. I^aume about 2 inches long, 

 ' '1 sections thickened. Fu/u^* separating into an ex- 

 it and an it)terior mrmbraneenclosinfir tne seeds. 

 Yellow. O. Aug.— SepL Damp soils. So. Ca. &, Florida. 



GE.VT7S XVII. ROBINIA. 



Calyx campanulate 5.toolhed, the two upper sepals united 

 Dearly to the summit, so as to give the caly.x somewhat the ap- 



