ORCHIDACEAE QUAEDAM AMERICANAE 
tata. Labellum subpanduratum, minute denticulatum, 
callo flabellato instructum. Columna apice Integra. 
Densely caespitose epiphyte with slender whitish roots. 
Secondary stems ascending or erect, abbreviated, up to 3 
mm. long, concealed when young by chartaceous whitish 
translucent sheaths. Leaf long-petiolate, including the 
petiole up to 1.6 cm. long; lamina marginate, 1 cm. long 
more or less, up to 4 mm. wide, oblanceolate, bilobed at 
the apex, with a minute apicule between the lobes. Petiole 
slender, about 6 mm. long, sulcate. Peduncle solitary at 
the apex of a secondary stem, exceeding the leaf, 1.5-2 cm. 
long, filiform, with several infundibuliform bracts at intervals 
below the raceme. Raceme 2-3-flowered, lax. Bracts of 
the inflorescence infundibuliform, scarious. Pedicel and 
ovary about 3 mm. long. Lateral sepals free almost to the 
base, 4 mm. long, 1 mm. wide, triangular-lanceolate, caudate- 
tipped, 1-nerved and lightly carinate along the median line, 
with a short supplementary nerve, margin glandular-ciliate. 
Dorsal sepal nearly 5 mm. long, linear-triangular, ter¬ 
minating in a slender caudate tip, 3-nerved, margin glandular- 
ciliate. Petals 4 mm. long, lower third cuneate-oblong, 
about .5 mm. wide, dentate and aristate where they are 
abruptly narrowed to form the linear-caudate terminal 
two-thirds, 1-nerved. Labellum 2.25 mm. long, angled on 
each side at base, gradually dilated to about the middle, 
when it becomes expanded into an obovate lightly retuse 
lamina with unevenly denticulate margin; basal third of 
the labellum ornamented with a flabellate callus. Column 
2 mm. long, dilated upwards, cucullate at the summit, 
entire. 
In habit not unlike Pleurothallis Fuegii Reichb. f., but 
distinct in the perianth segments. Related to P. hastata 
Ames, but distinguished from it by the awned petals. P. 
setigera Lindl. belongs to the same alliance, and in shape of 
the petals is very similar. P. schistopetala Schltr. is another 
near ally, but is larger in all its parts and has more ciliate 
petals. 
Guatemala, Department of Alta Verapaz, Samac to 
Coban, Harry Johnson 765, October 20, 1920. On tree 
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