BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
VoL. 15, 
prince, Massacnuserrs, May 29, 1952 
STUDIES IN THE GENUS MICRANDRA I 
THE RELATIONSHIP OF THE GENUS CUNURIA 
TO MICRANDRA 
BY 
Ricuarp Evans ScHuuteEs! 
In connection with a study of the genus Hevea, it has 
been found advisable to carry out investigations in genera 
which are believed to be related to that of the commer- 
cial rubber plant. Some of the results of this collateral 
research were published in 1947, when Baldwin and 
Schultes summarized (Bot. Mus. Leafl. Harvard Univ. 
12 (1947) 825-864) and brought up to date our knowl- 
edge of the genus Cunuria. Since 1947, field studies and 
taxonomic investigations of Hevea, Cunuria and M- 
crandra have been continued. The following notes are 
necessitated by our better understanding of the relation- 
ships of the last two groups of plants and are herein pre- 
sented in preparation for a monographic treatment of 
Micrandra. 
Micrandra was described by Bentham in 1854 (in 
Hooker’s Journ. Bot. 6 (1854) 871). It is conserved over 
Micrandra R. Brown (in Bennett Pl. Jav. Rar. (1844) 
237). The type species was Micrandra siphonioides Ben- 
tham from the Rio Uaupés in the upper Rio Negro basin 
'Botanist, Division of Rubber Plant Investigations, Bureau of Plant 
Industry, Soils, and Agricultural Engineering, Agricultural Research 
Administration, U. S. Department of Agriculture; Research Fellow, 
Botanical Museum of Harvard University. 
[ 201 ] 
pao | 
