ON THE ASCLEPIADEjE. 231 



PERIPLOCA. [Periplocse sp. Linn. 



Char. Corolla rotata. Squamis 5 faucis laciniis alter- 

 natibus, aristatis. 



Mlamenta distincta. Anther <b cohaerentes, dorso barbatae. 



Massce pollinis apici dilatato corpusculi stigmatis appli- 

 citae, solitariae, e quatuor connuentibus. 



Stigma submuticum. 



Folliculi cylindracei, divaricatissimi, laeves. Semina 

 comosa. 



Habitus. Frutices saepius volubiles, glabri. Folia oppo- 

 sita, nitida. Flores subcorymbosi interpetiolares. 



Patria. Europa Australis. Syria. Africa Septen- 

 trionalis et JEquinoctialis. 



Obs. Periploca Graeca, and laevigata, are the two prin- 

 cipal species of the genus. P. angustifolia, Billard. no 

 doubt also belongs to it; and I have seen a fourth and 

 very remarkable species brought from Sierra Leone by [58 

 Professor Afzelius, on account of which I have been obliged 

 slightly to modify the character. 



GYMNANTHERA. 



Char. Corolla hypocrateriformis. Corona faucis 5phylla. 



Filamenta distincta, fauci inserta. Anther a imberbes. 



Massm pollinis quaternatim applicitae apici dilatato cor- 

 pusculorum. 



Stigma apiculo bifido. 



Folliculi cylindracei, laeves, divaricatissimi. Semina co- 

 mosa. 



Habitus. Frutex volubilis, glaberrimus. Folia opposita, 

 nitida. Fedunculi laterales sub-dichotomi. Flores albo- 

 virescentes, imberbes. 



Patria. Nova Hollandia, intra tropicum. 



