Rather large, caespitose, epiphytic herbs up to 6 dm. tall. Secondary stems up to 5 dm. long, covered with scarious sheaths which are glabrous or at most ciliate. Leaves 3.5-12 cm. long and 1.8-7 cm. broad, lanceolate-ovate to oval, acuminate. Inflorescences 1 or more from the axils of each leaf, densely flowered; bracts very crowded, ovate-acuminate, infundibuliform. Dorsal sepal about 8 mm. long and 3 mm. broad, lanceolate, acuminate. Lateral sepals about 8 mm. long and 3 mm. broad, lanceolate, acuminate, somewhat oblique, connate nearly to the middle. Petals transverse, about 5 mm. broad; the posterior lobe about 2.5 mm. long, oblong-obovate; the anterior lobe about 2.5 mm. long and about 2 mm. broad, the lateral lobes malleoliform, the mid-lobe small, apiculiform.
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