ORCHIDACEAE QUAEDAM AMERICANAE 
as many as four tubular sheaths, monophyllous. Leaves 
up to 7.7 cm. long, 12-14 mm. wide, narrowly elliptical, 
obtuse, coriaceous, conduplicate at base. Peduncles 
solitary from the axil of the leaf, 13 cm. or more long, flowers 
opening in succession. Racemes lax, about 7 cm. long. 
Bracts of the inflorescence scarious, about 4 mm. long, in- 
fundibuliform, shorter than the pedicellate ovary, obliquely 
truncate, acute. Pedicel with the ovary 6.5 mm. long. 
Flowers purplish, 7-12 mm. apart, nodding. Lateral 
sepals 8 mm. long, coherent for two-thirds of their length, 
forming a narrowly elliptical lamina which is 4 mm. wide 
across the middle, terminal lobes long, triangular, apiculate, 
outer third of the lamina on each side densely matted- 
hairy. Dorsal sepal 7 mm. long, narrowly elliptical, acute, 
carinate on the outer surface along the median line, with 
matted hairs near the margin on each side of the upper 
surface. Petals smooth, 3 mm. long, 1.5 mm. wide near the 
middle, elliptic-oblong, rounded at the tip, 1-nerved along 
the median line. Labellum, including the slender ab¬ 
breviated claw, 4 mm. long, 1.75 mm. wide below the blunt 
rounded tip, 3-lobed, smooth; lateral lobes much reduced, 
1 mm. long, free portion porrect, very narrow, parallel¬ 
sided, obtuse, and slightly thickened at the apex; middle 
lobe 3 mm. long, oblong, with two slightly depressed lamel¬ 
lae which arise at the margin in front of the lateral lobes 
and converge near the middle of the disc, where they ter¬ 
minate abruptly within 1 mm. of the apex. Disc bilamel- 
late at the base, the lamellae 1.5 mm. long, approximate. 
Column nearly 3 mm. long, arcuate, dilated above the middle; 
clinandrium obscurely 3-lobulate, minutely denticulate. 
A close ally of Pleurothallis Wercklei Schltr., from 
which it is most readily distinguished by the reduced lateral 
lobes of the labellum and by the broader leaves. 
Panama, Cana and vicinity, R. S. Williams 971, 
April 27, 1908. On trees. Flowers purplish. 6000 feet 
altitude. (Type in Herb. Ames No. 10751.) 
Pleurothallis jocolensis Ames sp. nov. Radices fibra- 
tae, albidae. Caules secundarii graciles, monophylli. Folium 
