CALOTROPIS. 



t. 1792. — Asclepias procera Hort. Keiv. i. 305. Ascl. gigantea 

 Rot. Rep. t. 271. Beid el sar Prosp. Alp. cegypt. c. 25. fig. — 

 Arabia, Persia, North of Africa and adjoining islands. 



A shrub or small tree, 10-20 feet high. Stem round, pale green, 

 thickly covered with hoary pubescence, which readily rubs off. Leaves 

 decussate, obovate, acuminate, 5x2| inches. Peduncles corymbose, 

 about 3-flowered, forming a loose terminal panicle. Corolla slightly 

 campanulate, about an inch in diameter; segments ovate, acute, rather 

 concave, dull purple bordered with white on the upper side, silvery 

 on the under. — Juice extremely acrid. Prosper Alpinus says it was ad- 

 ministered successfully as a remedy for ringworm, and other cutaneous 

 affections ; and that it is also a powerful depilatory. According to 

 Professor Royle, this, or an allied species, produces a kind of Manna, 

 called Shukhr ool askur. 



HOYA. 



Corolla rotate, 5-cleft. Coronet of appendages depressed, 

 5-leaved ; leaflets spreading, fleshy, with the inner angle ex- 

 tended into a tooth lying upon the anther. Anthers terminated 

 by a membrane. Pollen-masses fixed by the base, converging, 

 compressed. Stigma not pointed or scarcely so. Follicles 

 smooth. 



1146. H. viridiflora RBr. in Wern. trans, i. 26. Wight 

 Asclep. 39. Sot. misc. ii. 98. suppl. t. 1. — Asclepias volubilis 

 Linn, suppl. 170. Roxb.fl. ind. ii. 36. Apocynum tiliaefolium 

 Lam. enc. i. 214. — Coromandel, Sylhet, the Nilgherry Hills. 



Leaves opposite, stalked, broad-cordate or ovate, but not sinuate at 

 the base, pointed, membranous, smooth; from 3 to 4 inches long; 

 Petioles from 1 to 2 inches long. Umbels lateral or axillary, simple, 

 many-flowered. Flowers numerous, green, with pedicels as long as the 

 peduncle. Corolla flat; crown of appendages turbinate, truncate. 

 Anthers reflected over the stigma. Follicles horizontal, obtuse, about 

 3 or 4 inches long, and 4 in circumference. — The root and tender 

 stalks sicken and promote expectoration. The leaves peeled and dipped 

 in oil, are much esteemed by the natives of India as a discutient in the 

 early stages of boils ; when the disease is more advanced, they are em- 

 ployed in the same way to promote suppuration. Wight. 



TYLOPHORA. 



Corolla rotate, 5-parted. Coronet of appendages 5-leaved ; 

 leaflets simple, fleshy. Anthers terminated by a membrane. 

 Pollen-masses transverse, or somewhat ascending, minute, ven- 

 tricose. Stigma not pointed. Follicles smooth, tapering to the 

 point, compressed, somewhat angular on one side. 



1147. T. asthmatica W. and A. ascl. 51. — ■ Asclepias asthma- 



tica Roxb.fl. ind. ii. 33. Cynanchum Ipecacuanha Willd. Jahrb. 



d. pharm. 1795. 169. t. 2. C. vomitorium Lam. enc. ii. 235. 



C. viridiflorum Bot. Mag. t. 1929. C. tomentosum Lam. enc. 



541 



