A terrestrial herb 1–2 dm. high.. Tubers ellipsoid, 8–20 mm. long, 6–12 mm. in diameter, ± densely tomentose.. Stem erect, slender, with a single leaf at the base and often 1 or 2 distant sheaths, covered with long spreading hairs.. Leaf adpressed to the ground, broadly ovate, orbicular or reniform-orbicular, cordate at the base, apiculate or shortly acuminate, 2–5 cm. long and broad, glabrous beneath, glabrous or with few or numerous long white hairs on the upper surface, the margins densely ciliate, sometimes distinctly veined; sheaths lanceolate, acuminate, densely hairy.. Inflorescence 2.5–11 cm. long, 3–4 cm. in diameter, loosely 3–14-flowered; rhachis with spreading hairs.. Bracts lanceolate, very acute, 5–11 mm. long, much shorter than the pedicel with ovary, long-hairy.. Flowers half-spreading or curved outwards, pale green with yellow-green central parts; pedicel with ovary 11–15 mm. long, densely hairy.. Dorsal sepal erect, ovate-elliptical, subacute, convex, 4–7 mm. long, 2.5–4 mm. broad; laterals spreading, obliquely semi-ovate, acute, 5–7.5 mm. long, 2–4 mm. broad; all sepals hairy outside.. Petals bipartite nearly to the base; posterior (upper) lobe erect, curved, lanceolate-linear, acute, 3–6 mm. long, 1–1.5 mm. broad, sparsely hairy; anterior lobe curved upwards, narrowly linear, 6–14 mm. long, ± 0.5 mm. broad, glabrous.. Lip tripartite nearly to the base, glabrous; middle lobe decurved, linear, obtuse, 6–12 mm. long, ± 1.5 mm. broad; side lobes curved upwards and rather longer than the middle lobe but only half as broad.. Spur dependent, slender at base, swollen in the apical half, 9–27 mm. long.. Anther 2–3 mm. high, rounded, canals upcurved, ± 1–1.5 mm. long.. Stigmas somewhat decurved, thickly club-shaped, 1.5–2 mm. long.. Rostellum narrowly triangular, 1–2 mm. long.
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Lip glabrous, 3-lobed almost to base; mid-lobe 6–12 × c. 1.5 mm; side lobes 7.5–14 mm long, upcurved, about half as wide as mid-lobe; spur pendent or slightly incurved, usually swollen towards apex, 9–27 mm long.
Petals 2-lobed ± to base; posterior lobe erect, 4–6 × 1–1.5 mm, curved linear, sparsely hairy; anterior lobe 6–14 mm long, c. 0.5 mm wide, upcurved, narrowly linear, glabrous.
Basal leaf appressed to the ground, 1.5–3.5 × 2–4.5 cm, heart-shaped, green with purplish margin, sparsely hairy or glabrous on upper surface, the margin ciliate.
Dorsal sepal erect, 4.5–6.5 × 2.5–4 mm, ovate, convex; lateral sepals spreading, 5.5–7 × 2–3 mm, obliquely semi-ovate.
Terrestrial herb 9–25 cm tall; tubers up to 2.5 × 1 cm, ovoid or globose, villous.
Stem hairy, with 1 basal leaf and usually with 1–2 bract-like stem leaves.
Inflorescence 8–11 × 3.5 cm, laxly 6–14(30)-flowered; bracts 5 mm long.
Anther 2–3 mm high, rounded; canals 0.8–1.5 mm long, upcurved.
Stigmatic arms 1–2 mm long, decurved, club-shaped.
Ovary and pedicel 12–15 mm long.
Flowers spreading, palegreen.
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