TROPICAL AMERICAN ORCHIDS 
of fleshy semiellipsoid basal calli, with a lower fleshy median 
ridge and with two less conspicuous ridges which continue the 
lateral calli. Column about 8.9 mm. long, slender, abruptly [ 
dilated at the apex, obscurely crenulate at the tip. 
Epidendrum adnatum is closely allied to E. Lankesteri ^ 
Ames, but differs in the narrower leaves, the narrower | 
floral parts, and unlobed apiculate lip. 
Costa Rica, Pejivalle, C. H. Lankester 838, May 30, 
1924. Hyaline sepals and ovary striately speckled purple; i 
the long filiform petals pale crystalline green; the lip whitish I 
green with two white arcuately projecting protuberances at | 
base; column very pale green; anther-cap tinged purplish. ; 
(Type in Herb. Ames No. 28696.) ' 
Epidendrum dentiferum A. <Sc S. sp. nov. Herba : 
parva sed cum floribus mediocribus. Caules breves, distich- i 
ifolii. Folia oblongo-linearia. Flores probabiliter plures. ■ 
Sepala lateralia falcato-lanceolata, obliqua, acuminata. Se- 
palum dorsale lanceolatum, acuminatum. Petala linearia, 
falcata, acuta. Labellum suborbiculare, abrupte mucro- 
natum, basi bicallosum. Columna brevis, apice dentata. 
Plant low, 10-11 cm. tall to the summit of the inflores¬ 
cence. Roots numerous, filiform, fibrous, flexuous, inter¬ 
twining, glabrous. Stems branched at the base, sometimes 
apparently rising from a creeping rootstock, 2.7-8 cm. long, 
complanate, mostly concealed by striate leaf-sheaths. Leaves 
distichous, oblong-linear, 2-6.75 cm. long, 5-5.5 mm. wide, 
inconspicuously bilobed and apiculate at the rounded apex, 
slightly narrowed near the base, subcoriaceous, about 1-1.5 
cm. between the alternate leaves. Flowers at the summit of 
the stems, probably several in the living plant (mostly de- | 
ciduous), relatively large. Sepals and labellum with recurved 
apices. Lateral sepals falcate-lanceolate, about 9.6 mm. long, 
about 2.9 mm. wide, long-acuminate, unicarinate on the outer 
surface with the keel extending into a mucro, 5-nerved at the 
base. Dorsal sepal lanceolate, 8.9 mm. long, 2.15 mm. wide, 
acuminate, carinate near the tip, 5-nerved below the middle. 
Petals narrowly linear, falcate, about 8.7 mm. long, acute, 
1-nerved (indistinctly 3-nervedbelow). Labellum suborbicular. 
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