420 ASCLEPIADE.2E. 



t. 231. — Leaves 2"-4" long; corolla whitish, 1£" diam. : tube equalling the linear calyx- 

 segments; follicles 3" long. — Hab. Jamaica!, Mae/., Pd., Waters, S. George's Gap; [Cuba! 

 and Mexico ! to Ecuador ! and Brazil]. 



9*. CALOTROPI5, R. Br. 



Calyx 5 -partite. Corolla 5-partite, valvate: crown 5-leaved, vertically inserted into the 

 column : leaflets complicate, with an ascending spur on the back. Pollinaria compressed, 

 spathulatc, diverging-pendulous : tail curved, horizontal at the base, inserted into the base 

 of the small gland. Stigma depressed. Follicles ventricose, smooth : seeds comose. — 

 Erect, glabrous shrubs ; leaves broad; corymbs peduncled : flowers large. 



16*. C. procera, R. Br. Leaves obovate-oblong or obovate-roundish, cordate at the 

 subsessile base ; corolla spreading ; crown-leajtets incurved, as long as the prismatical 

 column. — J acq. Amer. Pict. t. 88. — Asclepias gigantea, Jacq. — 6' high ; leaves 6"-8" long ; 

 corolla white, red-tinged within, 1" diam. — Hab. Naturalized in Jamaica {Jacq.), common 

 in savannahs, Kingston ; Antigua !, Nickols., Wullschl. ; [trop. Africa ! to Egypt !, Afghani- 

 stan ! and East Indies ! ; introduced into trop. America !]. 



10. GONOLOBUS, Mich. ' 



Calyx 5-partite. Corolla rotate, 5-partite or 5-lobed, contorted: crown annular, con- 

 necting the column and the corolla-throat. Anthers transversely dehiscent: pollinaria 

 obovate, tailed, horizontal. Stigma depressed. Follicles ventricose : seeds comose. — Climbers j 

 flowers corymbose, often few, rarely single. 



17- G. roatratus, R. Br. Pilose with recurved down ; leaves cordate with a narrow 

 sinus, ovate-obloug above the base, pointleted ; peduncles 4-5-flowered : pedicels slender ; 

 calyx slightly hairy, one-third to a quarter as long as the corolla: segments ovate, pointed ; 

 corolla 5-partite, slightly hairy : segments lanceolate-linear , acuminate. — Vahl, Ic. t. 7- — 

 Cynanchum, V. — Leaves 4"-24" long ; corolla 1" diam. — Hab. Trinidad !, Cr., La Ventilla ; 

 [Venezuela] . 



18. G. martinicensis, Bees. Branches pilose or glabrescent ; leaves cordate with 

 an open sinus, ovate-oblong above the base, pointleted ; corymbs umbelliform, peduncled : 

 pedicels slender ; calyx glabrescent, one-third to one-half as long as the corolla : segments 

 lanceolate, acuminate ; corolla 5-partite, glabrous : segments lanceolate-acuminate : crown 

 short, glabrous, undulate-subentire. — Leaves 4" long; corolla 10'" diam., beaked in the bud, 

 greenish. — Hab. Dominica !, Imr. ; [Martinique]. 



19. G. stellatus, Gr. (n. sp.). Glabrous; leaves elliptical or lanceolate-elliptical, 

 pointed at both ends ; peduncles few-1-flowered, nearly as long as the slender petiole ; calyx 

 one-third as long as the corolla, spreading from the beaked-conical bud : segments lanceolate, 

 acuminate ; corolla 5-partite : segments lanceolate-acuminate ; crown urceolate, glabrous : 

 margin lobed. — Stem filiform, climbing; leaves 2$"~li", petiole 12"'-6'" long; peduncle 

 much shorter than the pedicels ; corolla 20'"- 1 6'" diam. : segments 2'" broad at the base, 

 somewhat bluntish at the point, greenish, slightly papillose near the margin within. — Hab. 

 Jamaica !, Pd., Manchester, rare, hear Knockpatrick. 



20. G. pubescens, Gr. («. sp.). Branches densely hispidulous-pubescent with re- 

 curved down ; leaves small, ovate-oblong, mucronate, rounded or bluntish at the base, 

 densely pubescent; peduncles l(-2)-flowered, short, nearly as long as the petiole; bud sub- 

 globose ; calyx half as long as the corolla, hispidulous : segments lanceolate, bluntish ; 

 corolla deeply 5-lobed, glabrous : lobes ovate-deltoid, bluntish, internally papillose near the 

 point ; crown crenolate-lobed. — Stem filiform, climbing ; leaves 8"'-18" , petiole 2"'-3'" 

 long ; corolla marmorated with veins, 2"'-3"' diam. : crown fleshy, inserted into the base of 

 the short colnmn, nearly distinct from the corolla-tube ; stigma flat, 5-corniculate at the 

 margin.— Hab. Jamaica !, Macf. 



21. G. rhatnnifolius, Gr. [n. sp.). Branches-puberulous, glabrescent ; leaves ovate- 

 oblong, cuspidate or mucronate, rounded at the base, glabrous ; corymbs umbelliform, sub- 

 sessile, as long as the petiole j bud ovate-subglobose ; calyx one-third as long as the corolla, 

 puberulous: segments ovate-oblong, blunt; corolla deeply 5-lobed, glabrous: segments 



