ASCLEPIADE^E. LXI1. CYXAXCHCM. 



153 



H. Native of Kinour, Royle. In this species the rhizoma is 

 short, thick, and abrupt. 

 Kinour Cynanchuvn. PI. 



38 C. ARXOTTIA'NUM (Wight, 1. c.) herbaceous, erect, gla- 

 brous ; leaves oblong-oval, obtuse or emarginate, mucronate, on 

 short petioles ; umbels sessile, many-flowered ; corolla brownish 

 purple outside, 5-cleft; segments beset with white hairs inside; 

 corona deeply 5-cleft, equal to the gynostegium : segments ob- 

 tuse, separated by broad recesses ; pollen masses fixed beneath 

 their apexes ; stigma apiculated. y. . H. Found by Mr. Royle, 

 on his journey to Cashmere. The colour of the flowers will 

 readily distinguish this from other allied species. 



Arnott's Cynanchum. PI. 



39 C. XA'NUM (Hamilt. herb. no. 765. Wight, and Arnott, 1. 

 c. p. 59.) herbaceous, erect, glabrous ; leaves on short petioles, 

 linear-acutish, sub-auriculated at the base ; umbels almost ses- 

 sile, many-flowered, involucrated ; corolla rather large, 5-parted: 

 segments .obtuse ; corona deeply 5-cleft, equalling the gynos- 

 tegium : with obtuse segments ; pollen masses fixed by their 

 apexes; stigma apiculated. 11. H. Native of the East Indies, 

 north of Camrupa, among reeds, Hamilt. Leaves 4-5 inches 

 long, and 2-5 lines broad. 



Dn-arf Cynanchum. PI. dwarf. 



40 C.? HEVNEA'MM (Roem. et Schultes, syst. 6. p. 101.) 

 leaves oval, mucronate, ciliated at the base, as well as the pe- 

 tioles, discoloured beneath, and reticulated ; umbels few-flower- 

 ed, length of the petioles ; stems glabrous. Ij . ^\ S. Native 

 of the East Indies. Periploca reticulata, Roth. nov. spec. p. 126. 



Heyne's Cynanchum. Fl.? Clt. 1825. Shrub twining. 



41 C. SIBIRICUM (R. Br. in mem. wern. soc. 1. p. 48.) stems 

 decumbent, herbaceous ; leaves lanceolate-linear, opposite, or 3 

 in a whorl ; umbels on short peduncles ; corona deeply 5-cleft; 

 pollen masses fixed beneath their apexes ; stigma an emarginate 

 papilla; follicles ventricose. 1. H. Native of Siberia and 

 China. Asclepias Sibirica, Lin. spec. p. 315. Gmel. sib. 4. p. 

 77. no. 21. Murr. comm. goett. 1779. p. 23. t. 7. Plant 

 white from fine down. Flowers greenish white, smelling like 

 those of the lime tree. 



Siberian Cynanchum. Fl. Ju. July. Clt. 1775. PI. dec. 



42 C. PILOSUM (R. Br. in mem. wern. soc. 1. p. 46.) twining; 

 leaves ovate, acutish, and are, as well as the calyxes, hairy ; um- 

 bels short ; corona 10-cleft, length of the corolla; stigma termi- 

 nated by a bifid point. fj . rx . G. Native of the Cape of Good 

 Hope. Ker. bot. reg. 111. Peiiploca Africana, Lin. spec. 309 

 exclusive of the synonymes. Thunb. prod. 1. p. 47. fl. cap. 2. 

 p. 152. Andr. bot. rep. t. 557. Jacq. misc. 1. p. 13. t. 1. f. 3. 

 Comtnel. rar. t. 18. Plukn. phyt. 37. t. 137. f. 4. Morr. 

 hist. 3. p. 611. sect. 15. t. 3. f. 62. The whole plant is hairy. 

 Corollas purple ; corona white. Follicles ventricose. 



I ar. i3 ; leaves flat, sinuate; flowers pale green; follicles 

 thick, glabrous. Burm. afr. t. 14. f. 2. 



Pilose Cynanchum. Fl. Ju. Sept. Clt. 1726. Shrub tw. 



43 C. CRASSIFOLIVM (R. Br. 1. c.) twining ; leaves ovate, sub- 

 cordate, obtuse, with a mucrone, fleshy, and are, as well as the 

 calyxes, glabrous ; umbels drooping, on short peduncles ; corona 

 10-cleft, length of corolla; stigma terminated by a bifid point. 



': . '"\ G. Native of the Cape of Good Hope, in woods. C. ob- 

 tusifolium, Lin. suppl. 169? Thunb. prod. 1. p. 46. fl. cap. 2. 

 p. 159. Flowers green ? 



Thick-leaved Cynanchum. Fl. ? Clt. 1818. Shrub tw. 



44 C. CAPE'XSE (R. Br. 1. c.) twining ; leaves ovate-cordate, 

 obtuse, with a mucrone, and are, as well as the stems, glabrous; 

 calyxes downy ; corona 5-cleft, twice shorter than the corolla; 

 stigma terminated by a bifid point. Ij . ^. G. Native of the 

 Cape of Good Hope. C. Capense, Lin. suppl. 168. ? Thunb. 

 prod. 1. p. 47. fl. cap. 2. p. 159. Flowers white. ? 



VOL. IV. 



Cape Cynanchum. Fl. July. Clt. 1820. Shrub tw. 



45 C. FCE'TIDUM (H. B. et Kunth, nov. gen. amer. 3. p 202.) 

 twining, shrubby ; leaves ovate, acuminated, cordate, glabrous ; 

 racemes pedunculate, equal in length to the leaves ; calyx 

 downy ; corolla campanulately rotate : segments oblique, obtuse ; 

 corona 5-parted, with 3-lobed segments : the middle lobe elon- 

 gated, longer than the gynostegium ; pollen masses fixed be- 

 neath their apices by short stipes ; stigma naked, convex. fj . 

 ^. G. Native of Mexico, near Queretaro. Asclepias fce'tida, 

 Cav. icon. 2. p. 45. t. 158. descript. p. 135. Flowers greenish 

 yellow, or .white, fetid. Branchlets puberulous. 



Fetid Cynanchum. Fl. July, Aug. Clt. 1820. Shrub tw. 



46 C. FIMBRIA'TUM (H. B. et Kunth, nov. gen. amer. 3. p. 

 203. t. 234.) twining, shrubby, pilose ; leaves ovate- cordate, 

 sub-acuminated, pilose above, and puberulous beneath ; umbels 

 sessile ; calyx pilose ; corolla sub-campanulate : with oblong, ob- 

 tuse segments ; corolla 5-cleft, ciliately fringed in the sinuses : 

 with bidentate segments, short ; stigma terminated by capitate 

 point, and densely beset with minute, clavate caruncles, equal 

 to the corona in length ; pollen masses fixed beneath their apices. 

 J? . ^. S. Native in shady places near Cumana. Metaplexis 

 fimbriata, Spreng. syst. 1. p. 854. Leaves membranous, on 

 long petioles. Calycine segments oblong, acute. Corollas 

 white, glabrous, with a red throat. Perhaps a distinct genus. 



Fringed- crooned Cynanchum. Fl. July, Aug. Clt. 1826. 

 Shrub tw. 



47 C. ? LJE'TE (Nutt. gen. amer. 1. p. 164.) stem erect, some- 

 what sarmentose, marked with an alternating downy line ; leaves 

 smooth, subcordate-ovate, acuminated : having the recess at the 

 base nearly closed ; margins and nerves minutely downy be- 

 neath ; petioles very short ; urqbels interrupted, compound, on 

 long peduncles ; segments of ' corolla ovate-oblong, obtuse ; 

 corona cylindrical, retusely 5-toothed, nearly entire. If. . H. 

 Native of North America. Gonolobus lae'vis, Michx. fl. bor. 

 amer. 1. p. 119. Habit of C. vincetoxicum. Flowers small, 

 greenish white. 



Smooth Cynanchum. PI. erect. 



48 C. AXGUsTiFOLirM (Nutt. sen. amer. 1. p. 164.) twining, 

 smooth ; leaves narrow-linear, thickish ; umbels on long pedun- 

 cles ; segments of corolla lanceolate ; corona cylindrical, bluntly 

 5-toothed. If. . . H. Native from Carolina to Florida, in 

 irarshes. Ceropegia palustris, Pursh 1. p. 184. Flowers small 

 and greenish. Follicles unknown. 



Narrotv-leaced Cynanchum. PI. tw. 



49 C. HUMBOLDTIA'XCM (Schultes, syst. 6. p. 105.) twining, 

 shrubby ; branches furnished with 2 rows of down ; leaves ob- 

 long, acute at both ends, somewhat mucronate, glabrous ; umbels 

 sessile ; calyx rather downy ; corolla campanulate : with oblong 

 acutish segments ; corona 5-parted, with linear segments, rather 

 longer than the gynostegium, and about equal to the corolla in 

 length ; stigma convex, J? . ^. S. Native near Cumana. C. 

 suberosum, H. B. et Kunth, nov. gen. amer. 3. p. 205. Bark 

 of stems corky, white. Calycine segments oblong, acutish. 



Ihimboldt's Cynanchum. Shrub twining. 



f Doubtful species ; the greater number of nhich do not probably 



belong to the genus. 

 * Species natives of South America. 



50 C. TBNE'LLDM (Lin. suppl. p. 168. Willd. spec. 1. p. 1253.) 

 stems sub-herbaceous, twining ; leaves ovate-oblong, smooth, 

 small ; umbels irregular, lateral, sessile, shorter than the leaves ; 

 follicles subulate, length of a finger. If. / ~ > . S. Native of New 

 Granada, Mutis. Leaves about the size of chickweed. Flowers 

 about the size of a Galiurn. Stem filiform. Branches alternate. 



Slender Cynanchum. PI. twining. 



51 C. FUNA'LE (Poir. suppl. 2. p. 427.) stems filiform, twin- 

 X. 



