458 ACANTHACEiE. 



paniculate, umbellate, or axillary .- flowers bracteolate, apparently inverted with respect to 

 the primary axis. 



34. D. martimcensis, Juss. Glabrescent ; leaves ovate or ovate-oblong, pointed ; 

 peduncles 3-5-nate, axillary or in interrupted racemes : glomerules supported by 2 large, 

 ovate, cuspidate bracts: one bract somewhat larger than the other; corolla rosy: tube 

 narrowly cylindrical, lips oblong-linear, subeulire, one straight, the other revolute ; capsule 

 shortly clawed. — Jacq. Amer. Fict. t. 6.— Justicia, Jacq.—2' high ; leaves 2"-4", larger 

 bracts 8"'-10"', corolla 1^", capsule 4'" long.— Hab. Trinidad !, Sieb. Tr. 173 ; [Marti- 

 nique !, in shady places], 



35. D. assurgens, Juss. Leaves ovate or ovate-oblong, pointed ; glomerules distant 

 in compound spikes, supported by 2 lanceolate-linear or spaihnlale-linear bracts, superior 

 solitary, inferior ternate ; corolla scarlet, much longer than the bracts : tube incurved, 

 clavate, lips bluntly lanceolate, subentire, one spreading ; capsule shortly clawed. — Br. Jam. 

 t. 2. f. 1. — Justicia, L. D. Vahliana, Ns. ! (J. sexangularis, L. sec. Sic.) : the form with 

 most bracts spathulate. D. portoricensis and mollis, Ns. : pubescent forms. — 3-4' high, 

 6-angular above, with spreading branches ; leaves 4"-2", bracts 4"'-2'", corolla V-lr, 

 capsule 3'" long. — Hab. Bahamas!, Swains.; Jamaica!, all coll., along the coast : Trini- 

 dad !, Sch. ; [Cuba ! and Mexico ! to Venezuela]. 



17*. ANDROGRAPH1S, Wall. 



Calyx 5-partite. Corolla 2 lipped. Stamens 2 : anther-cells parallel, unequal, bearded 

 at the base. Capsule sessile, 16-4-seeded : segments of the dissepiment adnate to the 

 valves: seeds subglobose : retiuacula deciduous, — Herbs; flowers purple, in axillary or 

 compound racemes. 



36*. A. paniculata, Ns. Annual, glabrous, glandular at the summit ; stem 4-gonal, 

 trichotomous ; leaves lanceolate or oblong-lanceolate ; racemes in a spreading panicle ; co- 

 rolla-tube clavate; capsule oblong-linear, 12-16-seeded. — Wight, Ic. 2. t. 518. — 1-2 

 high ; corolla 6'", capsule 8'" long. — Hab. Naturalized in Jamaica !, Al., Pd., March, in 

 shady places, S. Vincent !, Guild.; [East Indies !]. 



Tribe II, THTJNBERGIEJZ. — Placenta cohering in the axis .- retinacula none. 



18*. THUNBERGIA, L.fil. 



Calyx cyathiform, 5-many-lobed or truncate, enclosed by 2 large bractlets. Corolla 

 salver-shaped : limb 5-partite, subequal, imbricative. Stamens didynamous, included : 

 anther-cells parallel, ciliate. Capsule 4-2-seeded, contracted into a large beak : dissepi- 

 ment separating from the introflexed valves : seeds subglobose, perforated at the base. — 

 Pubescent climbers ; flowers axillary, peduncled or racemose. 



37*. T. fragTans, Roxb. Leaves ovate or ovate-lanceolate, pointed, subcordate or 

 hastate at the base ; calyx 5rfid ; corolla pale-yellow, purple at the throat : lobes obversely 

 deltoid, 3-crenate at the top, nearly as long as the tube ; capsule globose, one-half to one- 

 third as long as the stout, subuliform beak. — Corolla-tube 1", capsule (the beak included) 

 about 1" long. — Hab. Naturalized in Jamaica !, Al., Antigua !, Wullschl., Trinidad !, Sieb. 

 Tr. 221 ; [East Indies !]. 



19*, SESAMUM, L. 



Calyx 5-partite : upper segment smaller. Corolla 2-lipped. Stamens didynamous, in- 

 cluded: anther-cells parallel. Capsule many- seeded, beaked: cells nearly 2-locellate by 

 incomplete, spurious dissepiments, proceeding from the middle of the valves : central pla- 

 centa separating from the introflexed valves : seeds angular (or compressed). — Annual herbs ; 

 leaves bearing minute points beneath, superior often alternate ; flowers axillary, shortly 

 peduncled. 



38*. S. orientale, L. Erect, pubescent ; leaves ovate-lanceolate, acuminate, entire or 

 inferior coarsely toothed below j capsule ovoid-oblong, 4-furrowed, shortly beaked. — Desc. 

 Fl. 4. t. 268. — S. iudicum, L, — Corolla rosy-white, Jr-li" long. — Hab. Naturalized and 

 cultivated in Jamaica, and Caribbean Islands, [introduced from the East Indies]. 



