Stelis ovatilabia is a variable species in the length of 
the secondary stems and in the length of the leaves. The 
type is about 11 cm. tall from the base of the secondary 
stems to the tip of the raceme, with the leaves 3.5—5 cm. 
long and 6-8 mm. wide; but specimens measuring only 
6 em. in height have been seen, and several plants col- 
lected recently in Guatemala by Alexander F. Skutch 
exceed 22 cm. in height. In all of the specimens exam- 
ined the flowers are about of equal size, the sepals meas- 
uring 2mm. in length. The stigmas are confluent beneath 
the rostellar process of the column and when fresh pro- 
trude as semiglobular masses of viscous consistency. 
Stelis ovatilabia Schltr. drawn from the type of S. cyclopetala 
Schltr. 1, flower enlarged about thirteen times. 2, column, front- 
view, enlarged twenty times. 3, labellum enlarged twenty times. 4, 
labellum enlarged about twenty times. 5, petal enlarged twenty-two 
times. 
Drawn with the aid of the camera lucida from a dried specimen 
[ 163 | 
by BLancHE AMES 
