Flower rather small for the plant, ‘‘brown-yellow and 
wine-red,’’ with the lip apparently maculate. Sepals with 
revolute margins, concave at the base. Dorsal sepal ob- 
long-ovate, abruptly complicate-acute, about 2.2 cm. 
long and 9 mm. wide when expanded. Lateral sepals sim- 
ilar, obliquely ovate-oblong, abruptly complicate-acute, 
about 2.3 cm. long and 10 mm. wide, adnate to the ab- 
breviated column-foot forming a very short mentum. 
Petals concave, obovate-oblong, lightly oblique, suba- 
cute, about 2 cm. long and 10 mm. wide above the mid- 
dle. Lip large, erect, parallel to the column and recurved 
in natural position, sharply 8-lobed above the middle, 
broadly-elliptic in outline when expanded, about 1.9 cm. 
long and 1.2 cm. wide across the middle; lateral lobes 
erect, narrow with an abbreviated rounded crenulate free 
apex; mid-lobe suborbicular from a very short claw, 
abruptly recurved above, undulate and finely crenulate- 
erose on the margins, fleshy and densely verrucose except 
near the margins, the warts being especially conspicuous, 
dense and enlarged above the middle; disc through the 
lower part with a median linear-oblong thickening which 
terminates in a prominent rounded callus. Column rather 
straight, suleate in front, about 1.1 cm. high at the back, 
with a very short foot. 
This species seems to be allied to Maaillaria Huebneri 
Schltr., but differs in having a markedly larger pseudo- 
bulb, a much larger leaf and petiole and a somewhat dis- 
similar lip. 
The specific name is in allusion to the verrucose mid- 
lobe of the lip. 
Loreto: vicinity of Iquitos, at 100 meters altitude, on living tree 
in dense forest, December 1936, G. Klug 10047 (Tyrer in Herb. Ames 
No. 61910). 
Maxillaria xantholeuca Schltr. var. peruviana 
C. Schweinfurth var. nov. 
[ 2938 ] 
