Erect or ascending terrestrial herbs with leafy stems, 2-7 dm. tall. Leaves 6-14 cm. long and 0.8-2 cm. broad, linear-lanceolate to lanceolate, acute or acuminate, reduced to bracts below and above. Inflorescence subracemose, up to 2 dm. long, densely flowered; flowers pale green. Dorsal sepal 6-10 mm. long and 5-7 mm. broad, ovate to sub-orbicular, concave. Lateral sepals 7-10 mm. long and 3.5-4.5 mm. broad, lanceolate to triangular-lanceolate, acute or acuminate. Petals 5.5-10 mm. long and 2-2.5 mm. broad, lanceolate, acute or obtuse, auriculate at the base on the anterior margin. Lip 5.5-8 mm. long and about 2 mm. broad, linear-lanceolate to lanceolate, entire, auriculate or dentate on either side at the base; spur up to 13 mm. long, recurved, subclavate. Ovary prominently winged when mature.
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