278 ORDER XLIII. LEGUMINOS.E. 



GrNus XIV.— CLITO'RIA. L. 16—10. 

 (From clitoris, a term in anatomy.) 



Calyx tubular, 5-cleft, or by the union of the two upper seg- 

 ments, 4-cleft. Vexillum large, expanding, covering the wings ; 

 2 bracts at the base of the calyx. Legume linear, compressed, 

 many-seeded. 



1. C. Maria'na, (L.) Stem sometimes erect, at others voluble, smooth. 

 Leaves termite ; leaflets ovate-oblong or ovate-lanceolate, occasionally 

 subcordate at the base. Peduncles 1 — 3-flowercd. Calyx cylindrical, 

 smooth, acute, much longer than the bracts. Flowers larger than the 

 preceding species. Style longitudinally bearded. Legume torulose, 

 glabrous, about 4-seeded. — White or pale blue. If. May — Aug. Dry 

 soils. 2 feet. 



Genus XV.— CEXTROSE'MA. D. C. 16—11. 

 (From the Greek Tcentron, a spur, and sema, the standard.) 



Calyx campanulate, 5-cleft, or by the union of the two upper 

 segments, 4-cleft. Vexillum large, with a spur behind. Sta- 

 mens mostly monadelphous. Style bearded at the apex. Leg- 

 umes linear, compressed. 



1. C. Virginia'na, (Benth.) Stem climbing, slightly scabrous, slender, 

 angled. Leaves ternate ; leaflets ovate or linear-oblong, slightly mu- 

 cronate, scabrous, pubescent, or glabrous. Flowers in axillary racemes, 

 generally 3. Segments of calyx linear-subulate, the two upper united 

 nearer the summit than the others. Style glabrous. Corolla large. 

 Legume long (nearl} T 6 inches). — Pale violet. % . June — Sept. Dry 

 soils. Common. Clitoria Virginiana, L. 



2. C. Plumie'ri, (Benth.) Stem twining j branches pubescent. Leaves 

 ternate ; leaflets ovate-oblong, acuminate, coriaceous, glabrous. Calyx 

 campanulate, shorter than the bracts. Corolla large. Legume long and 

 narrow. — Xew Orleans. Clitoria JPlumieri, Tur. 



Genus XVL— AMPHICAR'PjEA. Ell. 16—10. 



(From the Greek amphi, both, and ka?'pos, fruit; bearing fruit apparently on the 

 root and stem.) 



Calyx 4-toothed ; the two upper sepals united nearly or quite 

 to the summit, tubular, slightly gibbous at the base, destitute 

 of bracts. Vexillum broad, slightly auricled at the base, ap- 

 pressed. K< < ' and wing petals nearly straight and nearly equal, 

 unguiculate; lamina oblong. Stamens diadelphous. Ovary 

 Btiped, with 2 — 4 ovules. Style glabrous, filiform. Legume 

 eompresbed, Btipitate, 2 — 4 seeded. The flowers of this genus, 

 toward tli<' summit of the stem, usually differ from those near 

 the base, the upper ones usually perfect in all their parts, 

 while the lower sometimes are wanting in a corolla and a part 

 of the stamens ; hut the latter are the ones that usually mature 

 the fruit Climbing, herbaceous plants. 



