328 ASCLEPIADEZ. 
9. MELINIA. 
Melinia, Dene. in DC. Prodr. viii. p. 588; Benth. et Hook. Gen. Plant. ii. p. 757. 
Twining shrubs. One Mexican species and two or three in extratropical South 
America. 
1. Melinia angustifolia, A. Gr. Synop. Fl. N. Am. ii. p. 101. 
Metastelma? angustifolia, Torr. Bot. U.S. & Mex. Bound, Surv. p. 159. 
Norra Mexico, Sonora (Wright). Hb. Kew. 
10. BLEPHARODON. 
Blepharodon, Dene. in DC. Prodr. viii. p. 608, pro parte; Benth. et Hook. Gen. Plant. ii. p. 756. 
Twining shrubs. About sixteen species, restricted to tropical America. 
1. Blepharodon mucronatum, Decne. in DC. Prodr. viii. p. 603. 
Sours Mexico, Vera Cruz (Schiede; Galeotti, 1524; Linden, 344), Sierra de Zongolica 
(Bottert, 981); Panama, Paraiso (S. Hayes, 351). Hb. Kew. 
11. ENSLENIA. 
Enslenia, Nutt. Gen. N. Am. Pl. i. p. 164; Benth. et Hook. Gen. Plant. ii. p. 757. 
1. Enslenia ligulata, Benth. Pl. Hartw. p. 290. 
Souta Mexico, Aguas Calientes (Hartweg), without locality (hb. Pavon). Hb. Kew. 
12. VINCETOXICUM. 
Vincetoxicum, Meench. Meth. p. 717; Benth. et Hook. Gen. Plant. 11. p. 761. 
Herbaceous perennials, or erect or twining shrubs, inhabiting temperate, subtropical, 
and, more rarely, tropical regions in both hemispheres. About seventy species are 
known. 
1. Vincetoxicum kunthii, Hemsley. 
Orthosia kunthii, Dene. in DC. Prodr. viil. p. 527. 
Cynanchum lanceolatum, H. B. K. Nov. Gen. et Sp. ii. p. 208. 
Soutn Mexico, Toluca (Andrieur, 242). Hb. Kew. 
There are many other specimens in Kew herbarium belonging to this or one or more 
very closely allied species. 
2. Vincetoxicum sepium, Dene. in DC. Prodr. viii. p. 526. 
South Mexico, mountains east of Oaxaca, at 7000 feet (Galeotti, 1533), Zimapan 
(Coulter, 1001). Hb. Kew. 
13. ROULINIA. 
Roulinia, Dene. in DC. Prodr. viii. p. 516; Benth. et Hook. Gen. Plant. i. p. 762. 
About twelve shrubby, mostly twining species, inhabiting Tropical America. 
