During my work in the Rio Negro, it was possible to 
make both flowering and fruiting collections from: the 
same individual in several instances, “This enabled me to 
identify the material TE collected with even pauciflora 
var. corvaced by means of the flowers on the one hand, and 
with FZ. winor by means of the seeds on the other. Con- 
sequently, there can be no doubt that FZecea minor is 
the same as FL, paneiflora var. cortacea. This has been 
suspected for some time (Schultes in Bot. Mus. Leath 
Harvard Univ. 15 (1952) 111), but now the former name 
must definitely be placed in svnonyiry under the latter. 
Because of the International Rules of Botanical Nomen- 
clature requiring the use of the earliest name under the 
rank maimtaimned, it is tmpossible to use the earlier epi- 
thet mmor as the varietal designation. 
In 1925, Ducke introduced to science one of the most 
unusual concepts inthe genus when he deseribed FZevca 
camporum, Hevea camporum, a small bushy treelet col- 
lected by R. Monteiro da Costa in the open granitic 
savannah country between the upper courses of the Rios 
Marmellos and Manicoré, right affuents of the Rio Ma- 
deira in Brazil, is remarkable because of the extreme re- 
duction in the size of all of its parts. Like FZevea minor, 
it has been known through a single specimen which is in 
fruit. In 1945 and again in 1948, To attempted to reach 
the distant “campos” at the headwaters of the Rio Mar- 
mellos to study this concept in the field) during its sup- 
posed flowering period, to introduce living material into 
experimental nurseries, and to make herbarium speci- 
mens forstudy and authentication. The first trip tailed, 
due to lack of water in the headwaters of the Marmellos : 
the second, due to beri-beri. “A very close study of the 
type which is preserved in the Herbarium at the Jardim 
Botanico in| Rio de Janeiro, convinces me that. even 
lacking flowering material, we are sate in referring FZevca 
[ 268 
4 
