68 



Report on New and Rare Plants, fyc. 



VIII. Diplolepis vomitoria. 

 IX. Diplolepis apiculata. 



These two plants, one being the Asclepias Vomitoria of 

 Konig's MSS. and the other nearly related to it, have been 

 received from China by the Society at various times. The 

 former is a twining plant with very villous stems, silky ovate 

 sub-cordate leaves, and short, simple, or proliferous umbels 

 of greenish yellow flowers. The second resembles the 

 first in all points of structure and habit, but differs in having 

 cordate roundish apiculate villous leaves, and in producing 

 its flowers in much greater abundance. The parts of fruc- 

 tification of both species are very minute, and difficult to 

 analyse ; they appear, however, to differ in no other respect 

 from the character assigned to the genus Diplolepis by 

 Mr. Brown, than in having a flat, not rostrate, stigma. I 

 have, therefore, referred them to that genus, with the fol- 

 lowing differential characters. 



D. vomitoria ; foliis ovatis acutis opacis cum caule undique 

 sericeis, stigmate depresso. 



D. apiculata; foliis subrotundo-ellipticis cordatis apicu- 

 latis lucidis cum caule undique villosissimis, stigmate de- 

 presso. 



Both species are easily propagated by cuttings of the young 

 wood, placed under a hand-glass in a warm frame. They re- 

 quire the temperature of a stove. 



