NOTES ON PERUVIAN ORCHIDS 
BY 
CHARLES SCHWEINFURTH 
In the course of my study of the orchid flora of Peru, 
the following amplifications and alterations appeared to 
be advisable. 
Koelensteinia peruviana Schlechter in Orchis 12 
(1918) 28. 
In consideration of a collection, MeCarroll 84, which 
is surely referable to this species, as well as a minute 
examination of a photograph of the type collection, Ule 
6691, it seems advisable to publish certain additional data 
and corrections to the published description. 
The description of A. peruviana specifies an abbre- 
viated rhizome and aggregated pseudobulbs, whereas 
McCarroll 84 has the pseudobulbs separated a distance 
of 4cem. ona stout sheathed rhizome. Of greater impor- 
tance, the pseudobulbs of this collection, as well as those 
of the type of A. peruviana and of K. tonoptera Linden 
& Reichb. f., are surmounted by a long slender caules- 
cent neck which may reach a length of 18.5 cm. The 
petiole of the leaf appears to be elongate and up to 11.5 
cm. long. The floral segments are smaller than specified, 
the sepals being about 11.2 mm. long (as in the type of 
AK. peruviana) and not 14 to 15 mm. long as described. 
They are oblong-elliptic, elliptic or ovate as shown in 
the photograph of the type, scarcely oblong or ligulate- 
oblong as described. Finally, the lip is only about 6.2 
mm. long and not 12 mm. long as described, and is not 
broadly clawed but sessile and articulated to the free 
portion of the column-foot. 
Peru: Dept. Puno, Sandia, Sta. Domingo area, at 1550 meters 
altitude, December 22, 1940, D. McCarroll 84. 
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