CENTRAL AMERICAN ORCHIDS 
) 
turn, acutum, ecallosum, nervo medio prope apicem laminae 
prominenti. Columna carnosa, labello adnata. 
Plant about 18 cm. tall, branched, the branches ter¬ 
minated by a solitary yellowish flower, leafy. Branches 4-6 
cm. long, compressed, concealed by the sheathing bases of 
the leaves. Leaves 2-5 cm. long, up to 8 mm. wide, ligulate- 
oblong, bilobed at the tip, the lobes rounded and obtuse, 
coriaceous, distichous. Peduncles terminal on the branches, 
about 1 cm. long, concealed by the conduplicate base of the 
uppermost leaf, one-flowered. Pedicel with the ovary about 
7 mm. long, concealed by a spathaceous scarious glumaceous 
bract, somewhat roughened or minutely verruculose. Bract 
9-12 mm. long. Lateral sepals apparently spreading, 1.7 
cm. long, about 3 mm. wide near the base, narrowly lanceo¬ 
late, acuminate, acute, conspicuously carinate beneath near 
the apex, prominently nerved. Dorsal sepal similar. Petals 
about 1.5 cm. long, 3 mm. wide below the middle, narrowly 
lanceolate, acuminate, acute, more or less fleshy with 
i thickened nerves. Labellum 1.5 cm. long, similar in texture 
to the sepals and petals, adnate to the column, the free por¬ 
tion about 6 mm. wide across the base, triangular-lanceolate 
in outline, long and slenderly acuminate, the apical portion 
with strongly conduplicate margins. Disc ecallose in front 
of the column, the mid-nerve prominent above the middle 
of the lamina. Column about 5 mm. long, fleshy. 
Undoubtedly a close ally of Epidendrum singuliflorum 
Schltr., from which it differs in the more acuminate perianth 
segments of the larger flowers, in the differently shaped 
long-acuminate acute labellum, and in the larger leaves. 
Prom E. Boissierianum Schltr. it differs in having larger 
flowers, a very different labellum, and narrower leaves. In 
the type specimen there is no distinct callus at the base of 
the labellum in front of the adnate column, the only con¬ 
spicuous thickening being a longitudinal one from the 
middle caused by the protuberant or raised mid-nerve. 
Costa Rica, Cartago, La Estrella, C. H. Lankester & 
Alfredo Sancho 430, January 9, 1923. Common in open 
pasture fences, flowers pale yellowish green. (Type in 
Herb. Ames No. 23156.) 
41 
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