2n = 42

2n = 42

Solitary terrestrial tuberous herb 10-30 cm tall. Tubers not seen. Leaf 12-35 cm long, 2-5 mm across at the widest, dark green, base white, free lamina 8-12 cm long, erect, slender, moderately stiff, longer than inflorescence, often partially withered at anthesis. Raceme 3-12 cm long, bearing 5-20 (rarely more), subsessile, moderately crowded flowers. Floral bracts ovate c. 1.6 mm long, c. 2 mm wide, closely sheathing, subacute to obtuse or emarginate. Ovary obpyriforrn to obovoid, c. 4 rnrn long, 2.3 rnrn wide, set at about 40° to the rachis. Flowers 10-11 mm long, yellowish-green to reddish-brown, lightly scented, opening freely. Dorsal sepal ovate to elliptic-ovate, 6-7 mm long, 2-2.4 mm wide, decurved, obtuse to apiculate, distal margins involute. Lateral sepals linear-lanceolate, 6-7 mm long, 1.7-2 mm wide, free or connate at the base, recurved in distal half, parallel to slightly divergent, involute near the apex, bidentate. Petals oblong-lanceolate to linear-Ianceolate, 6-7 mm long, c. 1.5 mm wide, porrect, decurved. Labellum ovate-Ianceolate in outline when flattened, 6-7.5 mm long, 4-4.5 mm wide, conspicuously stalked, greenish to reddish-brown, proximal half erect or recurved, the tip often protruding between the lateral sepals, the margins entire or slightly undulate; callus occupying about two-thirds of the ventral surface of the lamina and of similar shape, raised, very thick and fleshy, green to red, shiny, wrinkled near the apex, extending nearly to the labellum apex. Column porrect from the end of the ovary, c. 2 mm long, c. 2 mm wide; appendages narrowly linear, falcate, longer than the anther, obtuse, c. 1.5 rnrn long, 0.4 mm wide, with connate basal lobes c. 0.4 mm long. Anther ovate, c. 1.5 rnrn long, 1.3 mm wide, brown, smooth to rugulose, much shorter than the rostellum; rostrum short, obtuse. Pollinarium c. 1 mm long; viscidium c. 0.2 mm long, ovate, white; hamulus c. 0.3 rnrn long, ligulate; pollinia c. 0.9 mm long, linear-clavoid, yellow, sectile. Stigma reniform, c. 1.3 mm × 1 mm, the rostellum about as high as the appendages. Capsule obovoid, c. 6.mm long, 3 mm wide, green to red-brown, shiny.

Plant at fl. 10–25 cm. tall. Tuber short-ovoid, adjacent to or occ. to c. 1 cm. away from tuber of previous year. Stem erect, ± fleshy. Lf often overtopping raceme; lamina terete, acute. Raceme of c. 5–20 evenly spaced fls, all ± fleshy. Per. reddish- or yellowish-green, two colour forms sts occurring together. Dorsal sepal c. 5 mm. long, ovate, concave, sts recurved; laterals slightly longer, narrower, weakly connate in bud and us. remaining so at least near base, fleshy and channelled, tip often minutely cucullate and shortly apiculate, so appearing bidentate. Petals a little shorter, wider, more delicate. Labellum of similar length, narrow at base and almost sessile, occ. shortly clawed, ovate, recurved but not abruptly so; margin entire, smooth to undulate; callus extending as an irregularly thickened median band almost to the narrowly subacute tip. Lateral processes of column bilobed, anterior lobe membr. and slightly shorter than anther; posterior lobe much smaller and ± callus-like. Anther sessile, just overtopped by rostellum. Stigma barely its own height above column-base.