‘Ovary glabrous.’’ Since a major cleavage in Dichaea is 
commonly made on the condition of the ovary, it results 
that D.vaginata is removed from the category of D. 
muricata. In addition, Krinzlin states in his description 
of the lip of D.vaginata: ‘‘lobulos ... divergentes non 
retrorsos’’; whereas he draws these lobes as strongly re- 
trorse in his floral analysis (l.¢. p. 48, fig. 4 D, a-c) and, 
moreover, they are pictured as retrorse in the record of 
the Endres collection. 
Other species which appear to be closely allied to D. 
muricata and which may be found to be variants of one 
polymorphic species are Dichaea Acostaer Schlitr., D. 
costaricensis Schlitr., D.neglecta Schltr. and D.oxyglossa 
Schltr. 
Dichaea muricata is apparently a widely distributed 
and variable plant (both vegetatively and florally) and 
extends from the West Indies and Guatemala to Brazil. 
Dichaea Powellii Schlechter in Fedde Repert. Bei- 
hefte 17 (1922) 90. 
Dichaea Brenesu Schlechter in Fedde Repert. Bei- 
hefte 19 (1928) 264. 
The description of Dichaea Brenesi, supplemented 
by a habit drawing and floral analyses of that species 
made at Berlin, shows that it should be regarded as a 
synonym of D. Powellii. 
For separation from D. Powell, Schlechter relied on 
the longer leaves of D. Brenesii and its supposedly dis- 
similar lip. However, in aspecimen of the type number of 
D. Powellii in the Ames Herbarium, the narrowly linear 
leaves are up to about 8.5 cm. long and 5 mm. wide (well 
within the range of size of the leaves in D. Brenesit) and 
the lip approaches that species very closely. Indeed the 
floral parts assigned to D. Brenesu, even with their 
measurements, appear to be a close approximation to 
[11 ] 
