278 ORDER XLIII. — LEGUMINOS.E. 



Gbnus 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 

 snbcordate at the base. Peduncles 1 — 3-flowered. 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.— CENTROSE'MA. D. C. 16—11. 

 (From the Greek kentron, 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. Vikginia'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 (nearly 6 inches). — Pale violet. 2f . June — Sept. Dry 

 soils. Common. Clitoria Virginiana, L. 



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

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

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

 narrow. — New Orleans. Clitoria Plumieri, Tur. 



Genus XVI.— AMPHICAR'PJSA. Ell. 16—10. 



(From the Greek amphi, both, and karpos, fruit; bearing fruit apparently on tho 

 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. Keel and wing petals nearly straight and nearly equal, 

 unguiculate ; lamina oblong. Stamens diadelphous. Ovary 

 stiped, with 2 — 4 ovules. Style glabrous, ' filiform. Legume 

 compressed, stipitate, 2 — 4 seeded. The flowers of this genus, 

 toward the 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 ; but the latter are the ones that usually mature 

 the fruit. Climbing, herbaceous plants. 



