described as rhombic-broadly-oval and figured as broadly 
obovate. 
Mavillaria pubilalia from Panama, of which we have 
a drawing of the type made under the supervision of Dr. 
Schlechter, has the large vegetative proportions of MM. 
Tiirckheimu, but the flowers are even smaller than in M. 
ringens, the sepals being cited as 2.5 cm. long. While 
the sepals are described as rather obtuse, they are shown 
in the drawing as acute or subacute and are very similar 
to those of the foregoing concepts. The callus of the lip 
is shown as obtuse and the mid-lobe subquadrate-oval. 
The Costa Rican M.A mparoana, which is represented 
in our collection by drawings from the type made at Ber- 
lin, is vegetatively very similar to M. Tiirckheimii, but 
with narrower leaves (up to only 2.8 em. wide) and the 
floral bract about twice surpasses the ovary (as is repre- 
sented in the analysis of M.ringens). The sepals appear 
to be about as long as in M.ringens, but the callus of the 
lip is shown as obtuse, and the mid-lobe as obovate. 
A series of collections in our herbarium extending 
from Guatemala to Panama shows considerable variation 
in vegetative characters, in the size of the flowers, in the 
length and shape of the mid-lobe of the lip and in the 
degree of pubescence on the disc of the lip. 
Other species which are allied to this concept are 
Maaillaria Brenesti Schitr. and M. Powelli Schltr. 
Maxillaria vaginalis Reichenbach filius Beitr. 
Orch. Centr.-Am. (1866) 77. 
Camaridium Wercklei Schlechter in Fedde Repert. 
Beihefte 19 (1923) 58. 
A sketch of the type of Maaillaria vaginalis from the 
Reichenbachian herbarium shows what was undoubtedly 
a young shoot entirely invested by distichous imbricating 
equitant sheaths. It shows at the summit the apical por- 
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