Recently [ have examined two collections of a Peru- 
vian orchid which appear to be florally inseparable from 
the Ecuadorian Mawillaria wantholeuca described in 
Fedde Repert. Beih. 8 (1921) 98, with a floral analysis in 
Fedde Repert. Beith. 57 (1929) t. 97, nr. 881. Except 
for a difference in the color of the flowers, the discrep- 
ancies are entirely vegetative. Although these two collec- 
tions show a rather wide divergence from one another 
in the vegetative parts, both of them have the rhizome 
adorned with shallow spreading infundibuliform sheaths, 
whereas that of the typical plant is described merely as 
‘‘vaginis pluribus obtecto.”’ 
One of these Peruvian collections (Weberbauer 7912) 
has a loosely branching rhizome and pseudobulbs 8 to 7 
em. distant (the typical form has them about 3 em. 
apart). Its leaves range from elliptic-oblong to oblong 
and when mature are 4.5—-8.2 cm. long and 0.9-1.5 em. 
wide (those of the type cited as oblong, 3.5-4 em. long 
and 1.3-1.5 em. wide). The inflorescences also are some- 
what longer than specified. 
In the other collection (Av/lip & Smith 23155), the rhi- 
zome is unbranched and bears the pseudobulbs at inter- 
vals ranging from about 0.5 to 4 em. The leaves of this 
collection are elliptic to oblong-elliptic and vary from 
6.7 to 10.8 em. long and from 1.5 to 2.1 em. wide. 
Cuzco: Prov. of Calea, Lares Valley above Mantoc, at 2600-2700 
meters altitude, on rocks, ** sepals reddish brown with greenish 
points,’” March 8, 1929, 4. Weberbauer 7912 (Tyrer in Herb. Field 
Mus. No. 605243; isotype in Herb. Ames No. 61951).—Ayacucho: 
Aina, between Huanta and Rio Apurimac, at 750-1000 meters alti- 
tude, epiphyte in open woods, “‘segments light green, lip darker, 
column paler,’” May 7, 17, 1929, EF. P. Killip & A.C. Smith 23156. 
Maxillaria xanthorhoda Schlechter in Notizbl. 
Bot. Gart. Mus. Berl. 7 (1918) 279; ex Mansfeld in 
Fedde Repert. Beith. 58 (1980) t. 52, nr. 205. 
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