Erect or ascending, branched or usually fasciculately branched herbs up to about 1 m. or more tall. Stems slender, covered with sheaths but becoming naked below, the lateral stems usually smaller than the main stem. Leaves 2-12 cm. long and 0.2-1.4 cm. broad, linear-lanceolate to lanceolate, acuminate, apex 2-3-lobulate and short-aristate, plicate. Inflorescence up to about 4 cm. long, bilateral; bracts up to about 1.5 cm. long, ovate-lanceolate or ovate, acuminate, cucullate, scarious; rachis somewhat fractiflex. Sepals often puberulous dorsally. Dorsal sepal 4.5-7 mm. long and 2-3.5 mm. broad, lanceolate to ovate-lanceolate, acute, cucullate. Lateral sepals 6-8 mm. long and 3-4 mm. broad, lanceolate to lanceo-late-triangular, acute, somewhat arcuate. Petals 5-8 mm. long and 2-2.5 mm. broad, linear-oblong or oblanceolate, obtuse or acute, often somewhat undulate. Lip 7-10 mm. long and 7-9 mm. broad, obovate-flabellate to suborbicular, lacerate-dentate at least toward the apex, saccate-gibbous at the base and with 2 approxi-mate calluses.
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