LEGUMINOSiE. 20<J 



Sect. 4. IIerpetica. Stamens of Chainaefistula {or some more abortive). Legume tetra- 

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

 seeds compressed, parallel to the dissepiments. — A shrub. 



161. C. alata, L. Leaflets 6-~\4i-jugal, large, oblong, subtruncate at the subsessile 

 base, rounded or retuse at the top, glabrescent : the loviest 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 margin ; legume black, mucronate : marginal 

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

 5"-2" long, the superior pairs decrescent ; legume 5" long. — Hab. Jamaica !, Wullschl., 

 along river-banks ; [Cuba, S. Thomas !, Guadeloupe !, Nicaragua ! to Brazil ; East Indies ; 

 Pacific Islands]. 



Sect. 5. Oncolobium. Stamens of Chamcefistula. Legume membranaceous, compressed, 

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

 pressed, at length parallel to the dissepiments. — Shrubs or herbs. 



162. C. hirsuta, L. Suffrutescent 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. Schcenbr. t. 270. — C. caracasana, Jacq. 

 C. venenifera, Rodsch. /—Leaflets 2V'-1", sepals 3"'-4"', petals 6"'-8'", legume 5" long, the 

 latter arcuate or straightish. — Hab. Caribbean Islands ! ; [Mexico ! to Brazil !]. 



163. C. occidentalism L. Annual or suffrutescent, glabrescent (or puberulous); 

 leaflets 4-8(-12)-jugal, ovate-lanceolate or lanceolate, acuminate: petiole bearing an ovoid 

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

 oblong-linear, margined, compressed, at length biconvex-subcylindrical. — SI. I. 175./. 3.4. 

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

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

 to Buenos Ayres; Egypt ! to Sudan ! ; Madagascar !, Arabia !, East Indies !, trop. Australia !, 

 Sandwich Islands !, Galapagos !]. 



Sect. 6. Prososperma. Stamens of Chamaefistula. 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. Annual, suffrutescent, glabrescent ; leaflets S-2-jugal, obo- 

 vate, mueronulate-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, L— 1'-2' high; leaflets 12"'-6"', sepals 2"'-3"', petals 6'", 

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

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



165. O. sericea, Sw. Annual, suffrutescent, rusty-hirsute with accumbent bristles above, 

 along the petioles and the margin of leaflets; leaflets 4r-2-jugal, obovate, mucronulatc-blunt, 

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

 most pairs : stipules long, linear-setaceous ; peduncles short, axillary, 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, 2"-l" long: seeds oblong, truncate.— Hab. Jamaica!, Macfl, Disl., 

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



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

 seeds, indehiscent : seeds obcordate, shorter than their podosperm, compressed, parallel 

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



166*. C. obovata, Collad. 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 seeds, glabrous. — Collad. 

 Cass. I. 15 a. Desc. Fl. 2. t. 113.— C. Senna, -Sw.— Leaflets 8^"-! 2"' long; legume 1J" 

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

 trop. Africa!]. 



