Plant slender, epiphytic, rather tall for the genus, 
about 20 em. high. Roots fibrous, filiform, numerous, 
glabrous. Stem short, entirely invested by numerous 
distichous imbricating leaf-sheaths of which only the up- 
per ones bear approximate blades, about 3.8 cm long. 
Leaves narrowly linear, arcuate in the dried specimen, 
abruptly obtuse, about 20 cm. or less long, 3.2 mm. or 
less wide, conduplicate below in the dried plant. Inflo- 
rescences lateral, basal, numerous, spreading, 1-flowered ; 
peduncle filiform, up to 8.3 em. long, adorned with sev- 
eral close tubular sheaths which are short and imbricating 
near the base and elongate and separated above. Ovary 
entirely concealed and surpassed by an elongate tubular 
bract. Flower rather large, yellow-green, translucent. 
Segments spreading. Sepals connate into a tube at base, 
as in the genus. Dorsal sepal linear-lanceolate, compli- 
cate-acute or subacuminate, 5-nerved, free part about 
15.5 mm. long and 8.7 mm. wide below. Lateral sepals 
obliquely lanceolate-linear, complicate-acute, 5-nerved, 
free part about 19 mm. long and 8 mm. wide, produced 
below into an elongate spur. Petals much shorter than 
the sepals in natural position, obliquely linear-lanceolate, 
long-acuminate, 3-nerved, about 13.5 mm. long and 8 
mm. wide near the base, with the margins of the basal 
part more or less irregular. Lip produced into an elon- 
gate spur; free portion lanceolate, long-acuminate to an 
acute tip, cuneate near the base, 3-nerved, about 9.8 
mm. long and 4.2 mm. wide across the dilated and con- 
cave lower portion when expanded; spur filiform-cylin- 
dric, about 16 mm. long, subobtuse. Column very short 
and stout, straight, wing-dilated with a concave upper 
portion, about 2.2 mm. high at the back. 
Cryptocentrum inaequisepalum has two apparent allies. 
The Colombian C. pergracile Schltr. is a smaller plant, 
with shorter leaves, much shorter sepals and a 7- (not 8-) 
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