91 



Cupsliaped enation from the midrib ou the back of the 

 leaf(lig. 13). 



Malvaceae. 



Sida rhombifolia L. 



Coll. Mr. E. Jacobson, Sinabaiig,Simaloer, Sumatra, Febr. 1913. 



Habitat the Tropics. 



Fasciatiou of the stem. 



Melastomaceae. 



Melastoma (malabatriciim L. *?) 



Coll. Mr. E. Jacobson, Padaog, Sumatra, Sept. 1913. 



Habitat Malaya. 



Leaves in whorls of 4 and 6. Leaves both at the base and 

 higher up grown together and sheathing. Probably also bio- 

 strepsis. The poor condition of the dried branches prevented 

 further examination. 



Ericaceae. 



Vaccinium dialypetalum J. J. S. 



Coll. A. Rant et J. J. Smith, Kertamauah, Bandoeng, Java, 

 April 1911. 



Habitat Java and Sumatra. 



The specimen v^as collected on an excursion 1600 M. above 

 the sea, where it was found growing and flowering on a tree. 

 On examination it proved to have a choripetalous corolla, a 

 phenomenon that in the genus Vaccinium has only been observed 

 in the subgenus Oxycoccus. 



A short time ago Mr. Smith discovered in the Leyden Her- 

 barium a twig collected on Sumatra which indubitably belongs 

 to the same species and bears sijmpetalous flowers but is other- 

 wise similar to the above specimen. 



The latter represents of course the normal structure. 



Gesneraceae. 

 Saintpaullia ionantha Wendl. 



