318 ASCLEPIADEZ. 
Order LXXXVIII. ASCLEPIADE. 
Asclepiadee, Benth. et Hook. Gen. Plant. ii. p. 728. 
An order embracing about 150 genera and 1300 species, generally dispersed in warm 
countries—a few in the temperate regions of the northern hemisphere, very few in 
South America and Extratropical Australia, and absent from New Zealand, but nume- 
rous in South Africa. | 
1. PHILIBERTIA. 
Philibertia, H. B. K. Nov. Gen. et Sp. iii. p. 195; Benth. et Hook. Gen. Plant. ii. p. 750. 
An exclusively American genus of shrubs and undershrubs. There are about thirty 
species, dispersed from Texas to Buenos Ayres. | 
1. Philibertia crassifolia, Hemsley. 
Sarcostemma crassifolium, Dene. in DC. Prodr. viii. p. 540. 
SouTH Muxtco, Oaxaca, at 2000 feet (Galeotti, 1529). Hb. Kew. 
2. Philibertia crispa, Hemsley. 
Sarcostemma crispum, Benth. Pl. Hartw. p. 79. 
Sout Mexico, Aguas Calientes (Hartweg). Hb. Kew. 
Possibly the same as P. undulata. 
8. Philibertia cumanensis, Hemsley. 
Sarcostemma cumanense, H. B. K. Nov. Gen. et Sp. iii. p. 195. 
South Mexico, Teapa (Linden, 309), Oaxaca, near the Pacific (Galeotti, 1527); 
Panama (S. Hayes, 544).—CotomBia; VENEZUELA; GurANA; north of Braziu; Cusa. 
Hb. Kew. 
4, Philibertia cynanchoides, A. Gr. Synop. Fl. N. Am. ii. p. 87. 
Sarcostemma cynanchoides, Dene. in DC. Prodr. viii. p. 541. 
Sarcostemma bilobum, Hook. et Arn. Bot. Beech. Voy. p. 317. 
South Uran to Arizona and Texas.—Nortu Mexico, Sonora (Thurber), around 
Matamoros (Berlandier, 2334); Sourn Mexico, Acapulco (Sinclair); GuaTemaza, 
Volcan de Fuego, 8000 feet (Salvin). Hb. Kew. 
5. Philibertia elegans, Hemsley. 
Sarcostemma elegans et 8. bicolor, Dene. in DC. Prody. viii. p. 541. 
South Mexico, mountains east of Oaxaca, 7000 feet (Galeotti, 1534), tableland of 
Tehuacan, 5000 feet (Galeotti, 1537), Real del Monte (Coulter, 971), San Felipe 
(Andrieux, 239), Santa F4 (Bourgeau). Hb. Kew. 
6. Philibertia lindeniana, Hemsley. 
Sarcostemma lindeniana, Dene. in DC. Prodr. viii. p. 541. 
Sout Mexico, Yucatan (Linden). 
