CENTRAL AMERICAN ORCHIDS 
long, the margins involute or overlapping, enclosing the 
pedicel and the lower portion of the ovary. Flowers green¬ 
ish, 7-10 mm. apart. Pedicel with the ovary 2.5-3 cm. long. 
Lateral sepals 14 mm. long, 3.5 mm. wide at the base, 
ligulate, narrowed gradually to the subacute tip, fleshy, 
more or less rigid, hardly spreading. Dorsal sepal sub¬ 
similar. Petals 13 mm. long, about 1.5 mm. wide, linear- 
oblong, subacute, fleshy. Labellum adnate to the column, 
about 12 mm. long, cordate-lanceolate, subacute, margins 
more or less erect, the basal portion strongly concave, with 
prominent nerves. Disc near the apex of the column with 
an excavated or sulcate triangular callus formed by two 
converging keels, the acute apex produced into a thickened 
mid-nerve which extends to the tip of the labellum. Column 
stout, 6 mm. long, clinandrium minutely denticulate on 
the posterior margin. 
A near ally oiEpidendmm imbricatum LindL, from which 
it is readily distinguished by the distant flowers and involute 
floral bracts. 
Costa Rica, Cartago, Santa Clara, C. H. Lankesier & 
Alfredo Sancho 443. 6000-6500 feet altitude. (Type in 
Herb. Ames No. 23727.) 
Epidendrum trachycarpwm LindL in Benth. Bot. 
Voy. Sulph. (1844) 172. 
Encyclia trachycarpa Schltr. in Beihefte Bot. Centralbl. 
36, Abt. 2 (1918) 474. 
Pseudobulbs about 7 cm. long, about 2 cm. in diameter 
near the base, elongated, pyriform, with basal sheaths which 
soon break down into straggling fibres, trifoliate. Leaves 
26 cm. or more long, up to 1 cm. wide, ligulate, acute. Pe¬ 
duncle slender, with the few-branched raceme 28-35 cm. 
long, about 7-flowered. Flowers up to 3.75 cm. across, 
fleshy, in dried specimens blackish, the petals margined with 
orange. Pedicellate ovary nearly 2 cm. long, scabridulous or 
verruculose. Lateral sepals 1.8 cm. long, 7 mm. wide near 
the middle, elliptic-oblong, acute, very fleshy, narrowed 
toward the base. Dorsal sepal similar. Petals 1.7 cm. long, 
about 5 mm. wide near the middle, spatulate, acute, fleshy. 
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