and relatively narrower than the others). Inflorescences 
about five in our specimen, basal in the axils of sheaths, 
relatively short, 1-flowered; peduncles filiform, provided 
below with several loose tubular scarious sheaths, about 
5.5 em. or less long. Flower rather small for the genus, 
white and whitish green, with spreading segments. Dor- 
sal sepal oblong-lanceolate, acuminate, 7-nerved, about 
2.24 cm. long and 7.6 mm. wide. Lateral sepals very 
obliquely lanceolate with the dorsal margin nearly 
straight and the anterior margin broadly rounded, acu- 
minate, 9-nerved near the base, about 2.68 em. long and 
1 cm. wide near the concave base. Petals elliptic-lanceo- 
late, lightly oblique, acuminate, 6- or 7-nerved near the 
base, about 2.1 cm. long and 7 mm. wide. Lip about 
2.4 cm. long in natural position, shortly clawed, sharply 
divided into a hypochile and epichile; claw short, broad, 
fleshy, sulcate, about 2 mm. long; hypochile condupli- 
rate-concave with the broadly rounded anterior margin 
irregularly digitiform-fimbriate, the center within having 
a low fleshy keel which is irregularly dilated near the 
apex; epichile attached to the back of the hypochile in 
the middle, elliptic-lanceolate, acuminate with a compli- 
‘ate apex, about 9-nerved, lightly concave, about 1.8 
cm. long and 7 mm. wide. Column conspicuous, ex- 
tended in front into an indistinct broad fleshy foot, about 
1.6 cm. high at the back, broadly winged on each side 
through the lower half, the wings being gradually dilated 
upward to an abruptly truncate tip. 
This species differs from Zygopetalum lucidum Rolte 
from British Guiana and Venezuela in having broader 
leaves, more membranaceous flowers, narrower petals, 
and dissimilar features of the lip. 
Loreto: Vicinity of Iquitos, epiphyte at 100 meters altitude, July 
1937, G. Klug 10109 (Tyern in Herb. Ames No. 65442). 
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