154 



ASCLEPIADE,E. LXII. CYNANCHUM. 



ing, branched ; leaves very narrow, wedge-shaped, retuse ; 

 flowers small, lateral, umbellate ; umbels sessile. ^ . ^. S. 

 Native of St. Domingo, Poiteau. Leaves small, hardly petio- 

 late, 5-6 lines long. Follicles compressed, an inch long. 

 Rope Cynanchum. Shrub twining. 



52 C. PEDUNCULATE (Lam. diet. 2. p. 236.) stem twining ; 

 leaves ovate, glabrous on both surfaces ; umbels solitary, axil- 

 lary, on long peduncles, fj . ^. S. Native of Guiana. Apo- 

 cynum scandens, &c. Plum. cat. 2. Burm. amer. t. 27- f. 2, 

 Aubl. guian. p. 273. Peduncles a foot long, bearing each an 

 umbel of white flowers at the apex. 



Long-peduncled Cynanchum. Shrub twining. 



53 C. TOMENTOSUM (Lam. diet. 2. p. 236.) twining, villous ; 

 leaves oval, sub-cordate, mucronate, clothed with white tomen- 

 tum beneath ; umbels few-flowered. T? . ^\ S. Native of the 

 East Indies. 



Tomentose Cynanchum. Shrub twining. 



54 C. DENTICULA'TUM (Vahl, eclog. 2. p. 23.) stems twin- 

 ing, beset with retrograde hairs ; leaves cordate, oblong, acumi- 

 nated, denticulated, ciliated, smoothish, except on the ribs and 

 veins, paler beneath ; peduncles axillary, solitary, 3-flowered ; 

 petals lanceolate, flat. I? . '"*. S. Native of Guiana. Leaves \ 

 inch long. Pedicels longer than the peduncles. Corolla rotate, 

 greenish yellow, ciliated. Very like Gonolobus roslratus. 



Denticulated-leaved Cynanchum. 



55 C. HIRSU'TUM (Vahl, eclog. 2. p. 24.) every part of the plant 

 clothed with yellow hairs, except the corolla ; leaves cordate- 

 oblong, short-acuminated ; corolla rotate, glabrous, with roundish 



" 



segments. 



Native of Trinidad. Calycine segments 



acute, a little longer than the corolla. Leaves 3-4 inches long, 

 petiolate. 



Hairy Cynanchum. Fl.? Clt. 1825. Shrub twining. 



56 C. PICTUM (Vahl, eclog. 2. p. 24.) twining, glabrous ; 

 leaves oblong, shining ; umbels axillary, pedunculate ; segments 

 of corolla villous inside, at the apex. fj . r ^. S. Native of 

 Cayenne. Leaves Ij inches long, obscurely nerved above, 

 veinless, very obtuse at the base; pale green beneath, and simply 

 veined ; nerves and veins purplish, as well as the petioles. Pe- 

 duncles longer than the petioles. Pedicels longer than the pe- 

 duncle. Calycine segments ovate, obtuse : of the corolla, ovate, 

 acute. 



Painted-leaved Cynanchum. Shrub twining. 



57 C. ACUMINA'TUM (Humb. et Bonp. in Willd. rel. mss. ex 

 Schultes, syst. 6. p. 111.) leaves oblong, much acuminated, 

 downy beneath ; umbels pedunculate ; stems twining. J? . '"X S. 

 Native of New Spain, on the banks of the river Atabapo. 



Acuminated-leaved Cynanchum. Shrub twining. 



58 C. ANGUSTIFOLIUM (Pers. ench. 1. p. 274.) stems twining ; 

 leaves linear-narrow ; umbels on long peduncles. If. . ^. G. 

 Native of Carolina. 



Narrow-leaved Cynanchum. PI. twining. 



* * Species natives of Africa. 



59 C. CRISPUM (Thunb. prod. 1. p. 46. fl. cap. 2. p. 158.) 

 stem erect, downy, simple ; leaves lanceolate, curled ; flowers 

 lateral. Ij . G. Native of the Cape of Good Hope, in Karro. 

 Leaves pilose, tapering into the petioles. Flowers axillary, few 

 or many ; peduncles pilose capillary. Corolla whitish yellow, 

 sub-campanulate, 5-parted ; segments ovate, drawn out into 

 long, purple, filiform points. Corona many-toothed, tubular. 

 In the description of this plant, given in Jacq. fragm. p. 31. t. 

 36. f. 5, the root is said to be tuberous, fleshy, a foot long. The 

 stems are said to be numerous, weak, branched, rather villous, 2 

 feet high. The leaves petiolate, stiff, shining, obtuse, with vil- 

 lous margins ; the peduncles short, twin, 1 -flowered; the flowers 

 sweet-scented ; the calyxes villous, with ovate, acute segments ; 



the corolla green, with a white campanulate corona, and linear- 

 obtuse segments. 



Cur/ed-leaved Cynanchum. Shrub 1 to 2 feet. 



60 C. FILIFORME (Lin. suppl. 169. Thunb. prod. 1. p. 46. fl. 

 cap. 2. p. 157.) stem erect, simple, pilose; leaves sessile, flat, 

 linear, pilose ; umbels hairy, ex Thunb. ; flowers verticillate, ex 

 Lin. ; corona tubular, erect, shorter than the corolla. fj . G. 

 Native of the Cape of Good Hope, on hills at the foot of the 

 mountains at Krum river. C. verticillare, Lam. diet. 2. p. 

 237. Leaves an inch and more long, but still shorter than the 

 internodes. Corona yellowish. Follicles linear oblong, gla- 

 brous, a finger long. 



Filiform Cynanchum. Shrub 1 foot. 



61 C. PE'NDULUM (Poir. suppl. 2. p. 429.) stem twining, 

 rough from stiff hairs ; leaves ovate-cordate, almost glabrous ; 

 racemes axillary, very long, pendulous. ^ . ^. S. Native of 

 Senegal. Leaves on long petioles, pendulous, 2 inches long, 

 Calyx glabrous. Corolla white. Pedicels almost an inch long. 



Penrfu/oiw-flowered Cynanchum. Shrub twining. 



62 C. HASTA'TUM (Lam. diet. 1. p. 236.) stem twining, much 

 branched ; branches rather filiform ; leaves hastately linear, 

 acute, glabrous. ^ . / "\ G. Cynanchum, H. R. ex Oriente, 

 D'Andre. 



.//asZate-leaved Cynanchum. Shrub twining. 



63 C. ARBOREUM (Forsk. aegypt. 53. no. 80. Lam. diet. 2. 

 p. 237.) stem twining; leaves varying in the same plant, often 

 ovate, linear -lanceolate or sub-hastate ; corolla rotate. Tj . / '\ 

 G. Native of Arabia. A non-lactescent tree. Flowers green. 



Tree Cynanchum. Shrub twining. 



64 C. OLE^EFOLIUM (Nectoux, voy. en egypt. t. 3.) erect ; 

 leaves coriaceous, ovate-lanceolate, acute, and are, as well as the 

 stem and calyxes, downy, ex Nectoux, glabrous, ex Delile ; pe- 

 duncles very long, bifid, 5-6-flowered ; flowers small, umbel- 

 late, ex Nectoux; flowers axillary, cymose, ex Delile. ^ . 

 G. Native of Upper Egypt. C. A'rghel, Delile, mem. sur 

 egypt. descrip. de 1'egypt. t. 2. f. 20. Leaves white, glaucous 

 beneath, ex Delile. Calycine segments lanceolate. Corolla 

 white, a little longer than the calyx. The follicles are used like 

 senna. 



Olive-leaved Cynanchum. Shrub erect. 



65 C. RA X DIANS (Lam. diet. 1. p. 236.) stem erect; leaves 

 cordate, acute, undulated, villous on both surfaces, but most so 

 beneath ; umbels terminal ; calyx rusty, villous ; corona cylin- 

 drical, white, longer than the calyx : having 5 linear, obtuse, flat, 

 horizontal teeth, radiating from the centre above the fructification ; 

 follicles ovate, villous. If.. G. Native of Arabia Felix, in dry 

 places, about Beit elFakih, rare. Asclepias radians, Forsk. aegypt. 

 49. no. 67. Leaves with white veins. Corolla with a rusty, viola- 

 ceous, cylindrical tube, having 5 pits at the top, between the 

 segments of the limb, which are shorter than the tube, compressed 

 at the base, spirally twisted at the apex, linear-lanceolate, gla- 

 brous, violaceous outside, and of an obscure yellow inside. 



- Radiating-crowned Cynanchum. PI. -|- foot. 



* Species natives of Asia. 



66 C. RETICULA'TUM (Retz. obs. 2. p. 15. Willd. spec. 1. p. 

 1258.) stems twining, corky at bottom ; leaves ovate, acumi- 

 nated, glabrous, flat ; umbels axillary ; follicles ovate, smooth. 



fy . '"\ S. Native of the East Indies. Perhaps the same as C. 

 inodorum, Lour. 



Reticulated-leaved Cynanchum. Shrub twining. 



67 C. INODORUM (Lour, coch.p. 166.) stems twining, corky at 

 bottom ; leaves ovate, acuminated, glabrous ; peduncles sub- 

 divided, fy . r ^. S. Native of Cochinchina. ? Flowers small, 

 yellow, scentless. Corolline segments linear, twisted, longer 

 than the tube ; corolla more salver- shaped than rotate. Co- 



