ever, that these two small-flowered plants, strikingly 
distinguished by having the disc of the lip strongly adnate 
to the lower part of the column, should be included in 
Sobralia which commonly has large flowers and a lip 
which is entirely free from the column. In his description 
of Sobralia pubescens, however, Cogniaux did much to- 
ward clarifying our problem, not only by amplifying the 
original description of Palmorchis pubescens, but even 
more by including a floral analysis of the plant. 
In 1920, Schlechter proposed the concept Neobart- 
lettia. Despite its characterization of being different in 
habit from Rolfea and having a lip which is free from 
the column, the genus actually shows in its component 
species a habit very similar to Rolfea, as well as to the 
other members of the Palmorchis group, and a lip of 
which the dise is always distinctly adnate to the lower 
part of the column. In fact, this adnation is quite evident 
in a flower taken from an isotype of Neobartlettia KuAl- 
mannit Schitr., and such adnation is specified in the orig- 
inal description of N.lobulata Mansf. 
Palmorchis (as we understand it) is a small genus of 
orchids thus far consisting of only six species centering in 
northern South America and extending to Trinidad and 
Panama. 
In vegetative appearance this genus resembles Corym- 
borchis and T'ropidia, but is readily separated from them 
by the adnation of the lower part of the dise of the lip 
to the column. This adnation of the lip to the column 
recalls the structure of the flowers in the genus V’anilla; 
however, the habit of Palmorchis and Vanilla is very dis- 
similar. 
According to Pfitzer’s systematic key to the Orchid- 
aceae (in Engler and Prantl Die Natiirlichen Pflanzen- 
familien), Palmorchis is in part referable to the Tropidieae 
(containing J'ropidia and Corymborchis). In the structure 
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