Erect, caespitose, epiphytic herbs usually with slender, complanate-elliptic, rudimentary, monophyllous pseudobulbs often completely enveloped by the conduplicate leaf bases. Leaves lanceolate, shortly acuminate, subcoriaceous, 8-30 cm. long and 1.4-3.0 cm. wide, the conduplicate bases distichously imbricating, often forming a short, narrow, complanate petiole, the leaves toward the base be-coming progressively shorter, the lowest reduced to non-foliaceous bracts. Inflorescences erect, 3-to 7-flowered racemes 15-25 cm. long, produced from the axils of the upper leaves. Flowers very small for the genus. Sepals rather fleshy, free, subequal, spreading, linear-lanceolate, acuminate, 1.4-2 cm. long and 0.2-0.3 cm. wide. Petals subequal to the dorsal sepal, obliquely lanceolate, acuminate, 1.1-1.5 cm. long and 0.15-0.25 cm. wide. Lip entire, rather fleshy, elliptic-lanceolate to linear-lanceolate, acute, 1-1.1 cm. long and about 0.45 cm. wide, the apex usually dorsally carinate and recurved, the base adnate to the base of the column, the disk with 2 fleshy parallel pubescent keels, about I/2 the total length of the lip, the apices terminating in 2 more or less prominent teeth. Column short, stout, about 5 mm. long, the base without a foot.
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