nutans, membranaceus, pro planta grandis. Sepala basi 
in tubum campanulatum connata. Sepalum dorsale basi 
ovatum, longe caudatum. Sepala lateralia basi ovato- vel 
triangulari-lanceolata, longe caudata. Petala perparva, 
in circuitu oblonga, apice truncato-bilobulato, prope 
basim cum dente conspicuo. Labellum simplex, oblan- 
ceolato-oblongum, apice late obtusum, basi cordatum. 
Columna petala aequans, leviter arcuata, apice alata. 
Plant epiphytic, caespitose, small, but with relatively 
large flowers, up to 10 cm. tall. Roots fibrous, numerous, 
glabrous. Stems approximate, short, sometimes with a 
decumbent base, about 1.8 cm. or less long, entirely or 
mostly concealed by two tubular sheaths which are black- 
ish and imbricating. Leaf solitary, erect, petioled, about 
6.9 cm. or less long; lamina linear or elliptic-linear, sub- 
acute with a minutely tridenticulate apex, very gradually 
narrowed below, coriaceous, with the mid-nerve promi- 
nent beneath, about 5.5 cm. long, up to 5.5 mm. wide; 
petiole slender, suleate, blackish. Inflorescences solitary, 
1-flowered, distinctly shorter than the leaf; peduncle 
filiform and blackish below, slightly dilated and green 
above, up to 5 cm. long, suberect; pedicellate ovary 
blackish and arcuate-recurved above, distinctly surpass- 
ing the tubular floral bract. Flower nodding, white, large 
for the plant but small for the genus. Sepals membrana- 
ceous, connate below into a campanulate tube which is 
5-6.5 mm. long. Dorsal sepal (free part) consisting of a 
short rather broad basal portion and a long tail or cauda, 
about 3.5 cm. or less long; basal portion concave, ovate, 
3-nerved, about 38 mm. long; tail filiform, relatively elon- 
gate. Lateral sepals similar to the dorsal sepal, about 
3.75 cm. long with a short basal portion and an elongate 
tail; basal portion ovate- or triangular-lanceolate, long- 
acuminate, about 8.9 mm. long, slightly oblique, 3- 
nerved, gradually passing into the tail. Petals very small, 
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