156 



ASCLEPIADE^E. LXV. DJEMIA. LXVI. SARCOSTEMMA. 



surfaces ; flowers umbellate. ^ . ^. S. Native of Brazil, in 

 the province of Minas Geraes, in grassy places of the diamond 

 district. 



06corda<e-leaved Ditassa. Shrub tw. 



Cult. For culture and propagation see Calotropis, p. 147. 



LXV. D^E'MIA (altered from the Arabic name of D. Fors- 

 kce'li). R. Br. in wern. soc. mem. 1. p. 50. Asclepias species 

 of authors. Cynanchum species, Jacq. 



LIN. SYST. Pentdndria, Digynia. Corolla subrotate, with a 

 short tube. Stamineous corona double : outer one short, 10- 

 parted ; the alternate segments short : inner one of 5 leaves ; 

 leaflets loose at the base, undulated at apex. Anthers termi- 

 nated by a membrane ; pollen masses compressed, fixed by their 

 apexes, pendulous. Stigma mutic. Follicles ramentaceous. 

 Seeds comose. Stems twining. Leaves opposite, cordate. 

 Flowers umbellate. Natives of the East Indies, and equi- 

 noctial Africa. 



1 D. EXTE'NSA (R. Br. in mem. wern. soc. 1. p. 50. Wight 

 and Arnott, contrib. ind. bot. p. 59.) shrubby, twining; leaves 

 roundish-cordate, acuminated, acute, auricled at the base, 

 downy, glaucous beneath ; peduncles and pedicels elongated, 

 filiform ; margins of corolla ciliated. fj . r *. S. Native of 

 the East Indies, in various parts, as well as on the banks of the 

 Ganges ; and at Sumbata, in the Himalaiah. Cynanchium cor- 

 difolium, Retz. obs. 2. p. 15. Asclepias echinata, Roxb. fl. 

 ind. 2. p. 44. mus. ind. or. cent. t. 616. Cynanchum extensum, 

 Jacq. icon. rar. t. 54. Ait. hort. kew. ed. 1. vol. 1. p. 303. 

 Cynanchum bicolor, Andr. bot. rep. 5C2. Flowers white. 



Extended Daemia. Fl. July, Aug. Clt. 1777. Shrub tw. 



2 D. CORDA'TA (R. Br. 1. c.) shrubby, twining ; leaves reni- 

 formly cordate, acute, villously tomentose, as well as the 

 branches, &c. ; umbels corymbose ; pedicels hairy, inch long, 

 fj . / "\ S. Native of Arabia Felix, and in the deserts about 

 Cairo, and on arid hills in Barbary, about Kerouan, Asclepias 

 cordata, Forsk. arab. p. 49. but not of Burm. fl. zeyl. p. 72. 

 which is Pcrguldria odoratissima. Pergularia tomentosa, Lin. 

 mant. p. 53. Vahl. symb. 1. p. 23. Desf. fl. atl. 1. p. 209. 

 Corolla livid or rusty green, 4 times longer than the calyx. Co- 

 rona white. 



CWate-leaved Daemia. Fl. July, Aug. Clt. 1824. Sh. tw. 



3 D. GUINEE'NSIS; shrubby, twining, hairy ; leaves cordate ; 

 lobes rounded behind ; petioles long : umbels racemose, 

 downy. lj . ^. S. Native of Guinea, in various parts. As- 

 clepias scandens, Beauv. fl. d'owar. 1 . p. 92. t. 56. Dae v mia 

 scandens, G. Don, in Loud. hort. brit. p. 94. Flowers white, 

 in crowded umbels. 



Guinea Daemia. Fl. July, Aug. Clt. 1824. Shrub tw. 



4 D. FORSKCE'LI (Schultes, syst. 6. p. 113.) shrubby, twining ; 

 leaves cordate, acute. Jj . '"X S. Native of Arabia Felix. 

 Asclepias Dae'mia, Forsk. aegypt. 51. no. 72. Flowers white. 

 Follicles terete, subulate, 2 inches long, a little incurved, green, 

 hispid from bent bristles. Perhaps distinct from Asclepias 

 (Gonolobus) setosus. 



Forshcel's Dasmia. Shrub tw. 



5 D. GLA'BRA (Schultes, syst. 6. p. 113.) shrubby, twining; 

 leaves ovate, acuminated, flat, quite glabrous ; flowers umbellate, 

 white. Jj . *"*. S. Native of Arabia Felix, at Taaes. Ascle- 

 pias glabra, Forsk. aegypt. 51. no. 74. Probably distinct from 

 the preceding. 



Glabrous Daemia. Shrub tw. 



Cult. For culture and propagation see Pergularia, p. 133. 



LXVI. SARCOSTE'MMA (from <rap o-apKoc, sarx sarcos, 

 flesh, and are/Apa, stemma, a crown"; in reference to the leaflets 

 of the inner corona being fleshy). R. Br. in mem. wern. soc. 1. 



p. 50. Wight and Arnott, contrib. ind. bot. 59. Asclepias 

 species of Lin. and others. 



LIN. SYST. Pentdndria, Digynia. Corolla rotate. Stami- 

 neous corona double ; outer one cup-shaped or annular, cre- 

 nated : inner one 5-leaved, higher than the outer one ; leaflets 

 fleshy. Anthers terminated by a membrane ; pollen masses 

 fixed by their apexes, pendulous. Stigma mutic or apiculated. 

 Follicles slender, smooth. Seeds comose. Stems twining or 

 decumbent, leafless, articulated ; or with distant opposite leaves. 

 Flowers umbellate, lateral, or terminal. Natives of the East 

 Indies and New Holland, as well as of South America. 



* Species natives of the East Indies. 



1 S. VIMINA'LE (R. Br. in mem. wern. soc. 1. p. 51. Wight 

 and Arnott, contrib. ind. bot. p. 59.) twining, leafless ; umbels 

 terminal; calyxes and pedicels canescent ; outer corona 10- 

 plicate, 10-toothed: teeth nearly equal: leaflets of the inner 

 corona flattish, exceeding the anthers ; stigma apiculated, bifid. 



Jj . (0 . S. Native of the East Indies. Wall. ascl. no. 99. c. 

 Wight, cat. no. 1556. Cynanchum viminale, Lin. syst. p. 257. 

 Willd. spec. 1. p. 1252. Lam. diet. 2. p. 233. ? Euphorbia 

 viminale, Lin; spec. 2. p. 649. Mill. diet. no. 15. Apocynum 

 viminale, Bass. act. bonn. Telfel-Tavil, Alpin. aegypt. 190. ? 

 Flowers white, sweet-scented. 



Twiggy Sarcostemma. Fl. July. Clt. 1731. Shrub tw. 



2 S. BRUNONIA V NA (Wight and Arnott, contrib. ind. bot. p. 

 59.) twining, leafless ; umbels lateral, sessile ; calyx and pe- 

 dicels canescent ; outer corona subplicate, with a 10-crenated 

 border : the alternate crenae almost obsolete ; inner corona 

 shorter than the anthers ; stigma apiculated, nearly entire. 

 T? . ^. S. Native of the south of Coromandel. 



Brown's Sarcostemma. Shrub tw. 



3 S. BREVISTIOMA (Wight and Arnott, 1. c.) twining, leafless ; 

 umbels terminal, or terminating the short lateral branches ; calyx 

 and pedicels glabrous; outer corona 10-plicate, 10-crenate ; 

 leaflets of inner corona gibbous on the back, equal to the gy- 

 nostegium; stigma mutic. fy.^.S. Native of Coromandel. 

 Wight, cat. no. 1558. S. viminale, Wall. ascl. no. 99. b. As- 

 clepias acida, Roxb. fl. ind. 2. p. 31. Asclepias aphylla, Roxb. 

 in mus. ind. orient, t. 607. 



Short-stigmaed Sarcostemma. Shrub tw. 



* * Species Natives of New Holland. 



4 S. AUSTRA'LE (R. Br. prod. p. 463.) leafless, articulated, 

 decumbent, sometimes twining ; umbels lateral or terminal , 

 having the stem drawn out beyond the umbel in the same direc- 

 tion ; common receptacle of pedicels convex, excentric. J? . ^. 

 S. Native of New Holland, on the south shore and within the 

 tropic. Very nearly allied to S. viminale. According to Wight 

 and Arnott, in contrib. ind. bot. p. 59. the character given to 

 this species is applicable to them all, and perhaps even it con- 

 tains two species, one with lateral and the other with terminal 

 inflorescence. 



Southern Sarcostemma. Shrub tw. or decumbent. 



* * * Species natives of Africa. 



5 S. THUNBE'RGII ; leafless, erect, branched ; geniculately 

 flexuous ; flowers solitary, pedunculate. fj . G. Native of 

 the Cape of Good Hope, in Karro, beyond the Hartequas Kloof, 

 near Hexrivier. S. aphyllum, Schultes, syst. 6. p. 116. As- 

 clepias aphylla, Thunb. prod. 1. p. 47. fl. cap. 2. p. 153. 

 Branches alternate. Follicles lanceolate, a hand long. 



Thunberg's Sarcostemma. Shrub erect. 



6 S. PYROTE'CHNICUM (R. Br. in mem. wern. soc. 1. p. 51.) 

 leafless, erect, branched, glabrous ; peduncles axillary, tuber- 

 cled, solitary, twin or tern, bearing each a capitate head of flowers 



