Small erect terrestrial herbs up to about 6 dm. tall. Stems short, cormous, bifoliate, tunicate. Leaves long-petiolate; lamina 3-16.5 cm. long and 1.5-9.5 cm. broad, oval to broadly ovate, obtuse or acuminate, membranaceous, paired, reaching to about the middle of the peduncle; petiole sheathing the lower part of the peduncle. Inflorescence a many-flowered, short or rarely somewhat elon-gated, subumbellate raceme. Dorsal sepal 3-5 mm. long and 1-1.6 mm. broad, lanceolate to ovate-lanceolate, obtuse. Lateral sepals 3-4.5 mm. long and 1-1.8 mm. broad, lanceolate to elliptic-ovate, obtuse, free to their bases. Petals 2-3.5 mm. long and 0.3-0.4 mm. broad, linear or linear-ligulate. Lip 2-4 mm. long and 1.5-2.5 mm. broad, ovate-triangular to ovate-lanceolate, the apex from rounded to-subrostrate, acute or obtuse, disc excavated and gibbous, fleshy, the cavity with a longitudinal ridge.
Home