S02 Descriptions of Malayan Plants. 



ADINANDRA SYLVESTRIS. 



Adinandra Sylvestris (W, J.) baccis trilocularibus. 



Suka ber anak. Malay, 



A large forest tree found at Moco Moco. 



XXXI. HYPERICINE^. . 



ELODEA.* (Adanson.) 

 HypericincB. Juss. 



This genus, which has been revived by a late author on 

 American Botany, appears to be abundantly distinguished 

 from Hypericum, and to form a good natural division. It is 

 principally characterised by having the stamina united into 

 three phalanges, which alternate with an equal number of 

 nectaries. In the following species the placentation is pe- 

 culiar : I know not whether the American plants exhibit the 

 same structure, as it is not mentioned in any description 

 which I have seen, but if it should prove on examination 

 that they do, it should form part of the generic character. 

 Loureiro's Hypericum Cochinchinense which undoubtedly 

 belongs to Elodea, appears to be very nearly related to my E. 

 Sumatrana, and his description of the seeds seems to indi- 

 cate a structure similar to what I have observed. The Hype 

 ricum petiolatum of the same author seems also referrible to 

 this genus and to be different from Linnaeus's H. petiolatum^ 

 which is a native of Brazil. In all the species now referre 

 to Elodea, the generic distinction appears to receive confir 

 mation from certain diflPerences of habit, which may be re- 



* Tridesmos, Hooker and Arnott, vide Hooker's Journal of Botany, 

 1. p. 372.— W. G. 



