Erect, epiphytic herbs with unbranching, monopodial, foliaceous stems 15-45 cm. tall, enveloped in the conduplicate bases of the many, distichously imbricating leaves. Leaf blades spreading, linear-ligular, acute to acuminate, coriaceous, 6-13.5 cm. long and 0.3-0.6 cm. wide, the blades articulated to the persistent sheathing bases and ultimately deciduous below. Inflorescences short, slender, 1-flowered scapes about 1.5-2 cm. long, produced from the leaf axils, terminating at the apex in a short, broadly cucullate bract which envelops and exceeds the ovary. Flowers relatively large for the genus, the sepals and petals pale green to white, the lip purple or pale green heavily marked with purple. Sepals free, glabrous, ovate-lanceolate to oblong-lanceolate, acute, 8-10 mm. long and 4 mm. wide. Petals elliptic-ovate, obtuse and apiculate to shortly acute, slightly concave, about 10 mm. long and 4 mm. wide. Lip with a broad ligular claw at the base, the blade dilated and 3-lobed, broadly trulliform when spread out, deeply concave in natural position, the short, obtuse to acute lateral lobes somewhat retrorse, the mid-lobe semi-orbicular when spread out, more or less conduplicate and shortly acute in natural position, the entire lip, including the claw, about 8 mm. long and 8 mm. wide. Column broad, stout, about 4-6 mm. long, the under-surface with a short, minutely papillose, infra-stigmatic ligule. Capsule glabrous.
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