Small to minute, erect, epiphytic herbs 2.5-10 cm. tall, with short, distichous, foliaceous stems, the imbricating leaf bases usually enveloping a small, subquadrate, compressed, monophyllous pseudobulb. Leaves falcate or gladiate, acute or acum-inate, the complanate blades 1.5-8 cm. long and 0.3-1.0 cm. wide, the imbricating bases distichously arranged in the form of an open fan. Inflorescences slender, erect, paniculate scapes 3-20 mm. long, produced from the bases of the pseudo-bulbs, conspicuously exceeding the leaves. Flowers subglobose, minute, in dense, subcapitate or elongate racemes terminating the branches of the panicle. Sepals dissimilar, of about equal length, green or pale yellow, the dorsal sepal ovate, acute, arching and deeply concave, about 2 mm. long, the laterals connate for nearly theiiP entire length, forming a single obovate, bifid segment about 2 mm. long below the lip. Petals elliptic-ovate, obtuse or subacute, about as long as the sepals. Lip entire, lanceolate, acute, about 2.5 mm. long, the base concave, the lateral margins erect and closely appressed to the sides of the column, the apex rather fleshy and recurved, ovate, acute, yellow or orange, about 1/3 the total length of the lip. Column short, stout, subcylindric, about 1 mm. long, the apex somewhat dilated, the base without a foot. Anther very large in proportion to the size of the flower, about 1.2 mm. long.
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