By Mr. James Traill. 



27 



very highly scented like H. carnosa, but stronger. The 

 corolla is frequently mottled beneath with red, and has sharp 

 pointed segments, the sides and ends of which are much re- 

 flexed. The crown is of a pale greenish white, with a 

 yellowish tinge in the centre. 



This plant bears a great resemblance to H. Pottsii, from 

 which however it may be principally distinguished by its 

 larger and thinner leaves, the veins of which are more 

 strongly marked, and also by the yellowish colour in the 

 centre of the crown. 



These five are all the species which are at present culti- 

 vated in British collections. Others are known to exist in 

 their native countries, some from the descriptions of authors, 

 and others from authentic specimens. The whole of the 

 genus is probably confined to the warmer parts of Asia, and 

 the islands or countries contiguous, and in all likelihood 

 is much more extensive than, from our present information, 

 we are enabled to determine. The attention of collectors 

 of plants in those countries should be carefully directed 

 to the Hoyas, because they are not only very ornamental, 

 and consequently desirable, but because they are easy to be 

 transported to Europe. 



Of the plants described in books, not yet introduced, the 

 first to be noticed is the Hoya ( Stapelia) Chinensis of Lou- 

 reiro, on which some observations have been made in a 

 previous part of this Paper, where it is stated to come from 

 the vicinity of Canton. The next is Hoya viridiflora, named 

 by Mr. Robert Brown, in the Wernerian Transactions, in 

 his Essay before referred to ; it is the Asclepias volubilis of 



