NOMENCLATORIAL CHANGES 
HEXADESMIA TO SCAPHYGLOTTIS 
BY 
CHARLES SCHWEINFURTH 
A study of the concept Hewadesmia has convinced us 
that this genus should not be maintained as distinct from 
the genus Scaphygi/ottis. The traditional mark of separa- 
tion between the two genera (and their only point of 
discrepancy) is that Hewadesmia has six pollinia whereas 
Scaphyglottis bears only four pollinia. If this mark of 
separation appears to anyone to be of generic value, one 
need only refer to the genus Plewrothallis which, in its 
generally accepted components, has either two or four 
pollinia. 
Accordingly I herewith submit a few new combina- 
tions and a new name to transfer some Central American 
species described as Hexadesmia to the concept Scaphy- 
glottis. 
Scaphyglottis Acostaei (Schiltr.) C. Schweinfurth 
comb, nov. 
Hewxadesmia Powellu Schlechter in Fedde Repert. 
Beihefte 17 (1922) 27, non Scaphyglottis Powellii 
Schlechter in Fedde Repert. Beihefte 17 (1922) 28. 
Hexadesmia Acostaei Schlechter in Fedde Repert. 
Beihefte 19 (1923) 293. 
Except for having slightly more elliptic petals, the 
concept Hewadesmia Powellii appears to be identical with 
H. Acostaet. 
Scaphyglottis bifida (Reichb.f.) C. Schweinfurth 
comb. nov. 
Hexadesmia bifida Reichenbach filius in Saunders 
Refug. Bot. 2, pt. 2 (1878) sub t. 113. 
[ 27 ] 
