mentioned, however, the flower of M. heteroclita is that 
of a true Zygopetalum. 
Appended to the original description of Mawillaria 
heterochita are these words (translated from the Latin): 
We are very sorry that we are unable to add further data 
to this rather imperfect description... . of a very re- 
markable and elegant species. For the specimens were 
among the most scanty of our herbarium and we found 
them badly eaten by insects. The figure was made near 
the living plant in its native place. 
It is significant that Maaillaria heteroclita is the only 
orchid described in Nov. Gen. ac Sp. [ which bears no 
mention of its habitat. Doubtless the concept came from 
Peru like the several other Maxillarias described in that 
work. It seems inconceivable, that two species from the 
same general region should have nearly identical floral 
segments and yet belong to quite different genera. The 
wise course, therefore, appears to be to consider Mawil- 
laria heteroclita to be a concept of dubious validity. 
Maxillaria huancabambae (K7riinz/.) C. Schwein- 
Surth comb. nov. 
Ornithidium Huancabambae Kriinzlin in Engler Bot. 
Jahrb. 54, Beibl. 117 (1916) 29. 
In the examination of isotype material of this species 
(Weberbauer 6098), certain discrepancies from the de- 
scription and additions to the diagnosis may be noted. 
In the first place, the roots do not appear everywhere 
(‘‘passim’’) but are concealed as parallel strands within 
the sheaths of the rhizome. Again the pseudobulbs ap- 
pear to be about 2 cm. (not 1.5 em.) distant. Careful in- 
spection shows that they are closely invested by a thin 
membranaceous sheath which extends as an irregular 
narrow cup around the basal portion of the leaves. Rare- 
ly the pseudobulbs are 3-leaved at the apex. The leaves 
ews 
