Corymborkis minima P.J.Cribb, Kew Bull. 51: 355 (1996).
A herb 15 - 30 cm tall; stems erect, rarely branching, 1 - several on an ascending rhizome, leafy; roots up to 10 cm below surface, branching, up to 3 mm in diameter, thickened at apex. Leaves suberect, ovate-elliptic, acute, 5 - 10 x 1.5 - 3 cm, glabrous, prominently 3-veined. Inflorescences 1 - several, simple or sometimes branching at base, 2 - 6 cm long, terminal, horizontal or slightly dependent, rather densely many-flowered; bracts oblong-ovate, acute, prominently 3-veined, 3 - 4 mm long. Flowers erect or suberect, pale greenish with a white lip and pale brown column; pedicel and ovary 5 - 6 mm long, scabrid. Dorsal sepal linear, acute, 11 - 12 x 1.5 mm; lateral sepals slightly falcate at base, linear, acute, 10.5 - 11.5 x 1 - 1.4 mm. Petals oblanceolate, obtuse, 10 - 11 x 1.5 mm, slightly erose on apical margin. Lip canaliculate, recurved in apical quarter, linear-oblong or very slightly pandurate, 10 - 11 x 2 - 2.5 mm, erose on apical margin, basal margins fleshly thickened; callus fleshy, V-shaped on apical quarter of lip. Column terete, clavate, straight, 8 - 9 mm long; rostellum shortly bifid; anther obpyriform.
Terrestrial in riverine or old growth lowland forest on very acid sandy clay soil; sea level - 100 m
Cameroon to Equatorial Guinea