159 



2. Collector indigenus prope Tandjong Priok [forma 

 bicolor, specimen quod nunc in Horto Bogo- 

 riensi colitur *]. 



3. Collector indigenus in monte Goentoer [forma 

 concolor, specimen nunc in Horto Bogoriensi 

 cultum.J 



This species which seems to be rare in Java has been wrongly placed by 

 Miqtjel in the section Gathetostemma, it is a true Plocostemma. The Index 

 Kewensis unites it, perhaps rightly, with H. Cumingiana Decaisne, a native of 

 the Philippine Islands. Prom the brief diagnosis of this species in the Pro- 

 dromus of De Candolle it does not appear that the two plants are quite iden- 

 tical. I have not been able to procure the orginal description of Tuecz. 



1) It is not impossible that this specimen is wrongly labelled and does not come 

 from there. 



C. A. Backer. 



