LBGUMINOSjE. 209 



Sect. 4. Herpetica. Stamens of ChamEefistula (pr some more abortive). Legume tetrar 

 gonal hy longitudinal wings along the middle of the valves, dehiscent, many-celled : 

 seeds com/pressed, parallel to the dissepiments. — A shrab. 



161. C. alata, Z. Leaflets 6-l4i-jugal, large, oblong, subtrancate at tbe subsessile 

 base, rounded or retuse at the top, glabresceut : the lowest pair close to the node, and dis- 

 tant from the next pair : petiole 3-angular, devoid of vascular glands ; raceme long, terminal ; 

 bracts large, deciduous ; petals lacerate on the imirgin ; legume black, mucronate : marginal 

 edges entire, wings crenulate. — SI. t. 175./. 2. liesc. Fl. 6. t. 443. — 6'-10' high ; leaflets 

 B"-2" long, the superior pairs decrescent j legume 5" long. — Has. Jamaica !, Wullschl,, 

 along river-banks ; [Cuba, S. Thomas I, Guadeloupe !, Nicaragua ! to Brazil ; Bast ladies ; 

 Pacilo Islands]. 



Sect. 5. Onoolobium. Stamens of Chamsefistula. Legume membranaceous, compressed, 

 at length biconvex or subcylindrical, bivalved, many-celled, devoid of pulp : seeds com- 

 pressed, at length parallel to the dissepiments. -^Siavbs or herbs. 



162. C. hirsnta, L. Suffrutesceiit or shrubby, pubescent ; branches obtuse-angled ; 

 leaflets 4-6-jugal, elliptical or elliptical-oblong, acuminate : petiole bearing a cylindrical 

 gland above its base ; racemes short, few-flowered; legume linear, pubescent, not torulose, 

 at length subcompressed-biconvex.—Jacq. H. Sehcenbr. t. 270. — C. caracasana, Jacq. 

 C. venenifera, JJbrfscA./— Leaflets 24"-l", sepals 3"'-4"', petals 6"'-8"', legume 5" long, the 

 latter arcuate or straightish. — Hab. Caribbean Islands I ; [Mexico ! to Bra^ !] . 



y 163. C. occidentalis, L. Annual or suffrutescent, glabresceut (or puberuloos); 

 leaflets 4-8 (—12) -jugal, ovate-lanceolate or lanceolate, acuminate : ^efo'ofe Sean'rej' an ovoid 

 gland near its base ; racemes short, few-flowered : pedicels bracteate ; legume glabrous, 

 oblong-Unear, margined, compressed, at length biconvex-subeylindrical. — -SI. t. 175./! 3. 4. 

 Desc. Fl. %.t. 135.— Leaflets 2"-l", sepals 2"'-3"', petals 6'", legume 4"-2" long... CoroUa 

 ydlow, but whitish in drying. — HaB. Jamaica !, all coll., to Trinidad ! : a weed ; [Louisiana ! 

 to Buenos Ayres j Egypt I to Sudan ! ; Madagascar 1, Arabia I, Bast Indies !, trop. Australia !, 

 Sandwich Islands !, Gr^pagos I]. 



Sect. 6. Pbosospebma. Stamens o^ Chamsefistula. Legume compressed-tetragonal, linear: 

 seeds compressed, parallel to the valves, their longer diameter likewise parallel to the 

 valves. — Mostly annual herbs. 



^ 164. C. obtusifolia, L. Ann ual^ suffrutescent, glabrescent ; leaflets Z-i-jugal, obo- , 

 vate, mucronulate-blunt, cuneate at the base : petiole bearing cylindrical glands between the 

 lowest or two lower pairs : stipules long, linear-setaceous, deciduous ; peduncles few-flowered ; 

 legume chartaceous, glabrous, smooth, compressed-tetragonal, acuminate: margins grooved. 

 —SI. t. 180./. 5.— C. Tora, i.— 1'-2' high ; leaflets 12"'-6"', sepals 2"'-3"', petals &", 

 legume 5"-3'' long, the latter arcuate or straightish. — Hab. Jamaica I, all coU., to Trinidad ! : 

 a common weed ; [Ohio ! to Brazil I ; tropical Africa ! and Asia ! to China I ; Galapagos !]. 



/ 165. C. Bericea, jSzo. Annual, suifrutescent, rwily-AjVjMiff with accumbent bristles above, 

 along the petioles and the margin of leaflets ; leaflets 4i-%-jugal, obovate, mucronnlate-blunt, 

 rounded at the base, subhirsute beneath : petiole bearing subulate, stipitate glands between 

 most pairs : stipules long, linear-setaceous ; peduncles short, axUlary, few-flowered ; legume 

 chartaceous, rusty-hirsute or glabrescent, biconvex-subtetragonal, deeply impressed trans- 

 versely along the dissepiments : margins filiform, entire. — 6"— 3' high ; leaflets 1 8'"-8"' long ; 

 legume slightly arcuate, 3"-l" long : seeds oblong, truncate. — Hab. Jamaica !, Maif., Hist., 

 in pastures ; "[Cuba I, Panama !, Brazil I]. ' 



Sect. 7. Senna. — Stamens of Chamsefistula. Legume flat-compressed, protuberant at the 

 seeds, indehiscent .seeds abcordate, shorter than their podosperm' compressed, parallel 

 to the valves, and their longer diameter transverse to the valves. 



166*. C. obovata, Goliad. Suffrutescent, glabrous ; leaflets 4-7 -jugal, obovate : pe- 

 tiole eglandular : stipules lanceolate, acuminate, persistent ; racemes axillary, few-flowered : 

 pedicels ebracteate; legume arcuate, broadly-oblong, crested at the «««(&, glabrous. — Collad, 

 Cass. t.\i a. Desc. Fl. 2. t. 113.— C. Senna, Sw.— Leaflets 8"'-12"' long ; legume li" 

 long, 8'" broad. — Hab. Naturalized in Jamaica!, ^n^A<, near Port Royal ; [introduced from 

 trop. Africa!]. 



