Small epiphytic herbs with short, distichous, foliaceous stems, the imbricating leaf bases distichously arranged in the form of an open fan and usually enveloping a small, monophyllous pseudobulb. Leaves falcate to gladiate, acute. Inflorescences paniculate scapes produced from the bases of the pseudobulbs and conspicuously exceeding the leaves. Flowers subglobose, minute, in dense racemes terminating the branches of the panicle. Sepals dissimilar, of about equal length, the dorsal sepal arching, deeply concave, the laterals connate for nearly their entire length, forming a single bifid segment below the lip. Petals elliptic-ovate, obtuse or subacute, about as long as the sepals. Lip entire, concave, articulated with the base of the column, the lateral margins erect and parallel with the column, the apex rather fleshy and recurved. Column subcylindric, erect, the base without a foot. Anther terminal, operculate, incumbent, 1-celled; pollinia 2, waxy.
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