A terrestrial herb 1.5–3.5 dm. high, glabrous except for the roots.. Tubers ovoid or ellipsoid, 1–2 cm. long, 1–1.5 cm. in diameter, densely tomentose.. Stem erect, rather stout, with a single large leaf at the base and several much smaller sheath-like ones along its length.. Leaf adpressed to the soil, orbicular, ovate-orbicular or reniform-orbicular, obtuse or apiculate, cordate at the base, 2–4.5 cm. long, 2.8–4.5 cm. broad, fleshy; sheaths 3–7, lanceolate, acute, rather loose, up to 2.7 cm. long.. Inflorescence 3–7 cm. long, 3.5–5 cm. in diameter, rather closely 1–5-flowered.. Bracts like the sheaths, leafy, lanceolate, acute, 1.7–2.5 cm. long.. Flowers nearly erect, white; pedicel with ovary 2.5–3 cm. long, the latter with 6 toothed wings.. Dorsal sepal erect, elliptical-lanceolate, obtuse, convex, 11–17 mm. long, ± 6 mm. broad; laterals deflexed, obliquely lanceolate, acute or subacute, ±17.5 mm. long, 6.5–8 mm. broad; all sepals with 1–3 low toothed keels on the outside.. Petals bipartite nearly to the base; posterior (upper) lobe erect, curved, oblanceolate-linear or oblanceolate-ligulate, 13–18 mm. long, 2–3 mm. broad; anterior lobe curved upwards, oblanceolate, sometimes shortly and coarsely toothed at the apex, 14–19 mm. long, 3.5–5 mm. broad.. Lip projecting forwards, tripartite nearly to the base; middle lobe lanceolate or broadly lanceolate, subacute, 15–20 mm. long, 4.5–9 mm. broad; side lobes somewhat incurved, oblanceolate, acute, about as long as the middle lobe, 5-7.5 mm. broad.. Spur pendent, narrow in the basal half, the apical half or third much swollen, 2.4–2.8 cm. long.. Anther curved back, apiculate, 5–6 mm. high, canals slightly incurved, 2–3.5 mm. long.. Stigmas porrect, rather stout, cylindrical below, swollen and truncate at the apex, 5.5–7 mm. long.. Rostellum narrowly triangular, acute, ± 4 mm. long.
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Lip projecting forwards, 3-lobed to c. 2 mm from base, all lobes oblanceolate from a narrow base; mid-lobe 15–21 × 4.5–9 mm; side lobes 15–21 × 5–7.5 mm, somewhat incurved; spur 24–30 mm long, pendent, the apical third very swollen.
Sepals all with 1–3 keels on outside; dorsal sepal erect, 11–16 × c. 6 mm, elliptic, obtuse, convex; lateral sepals deflexed, 17–20 × 6–8 mm, obliquely lanceolate, acute.
Petals 2-lobed almost to base; posterior lobe erect, 12.5–14 × 2–3 mm; anterior lobe 14–20 × 3.5–5 mm, both lobes oblanceolate from a narrow base, acute.
Basal leaf appressed to ground, up to 4.5 cm long and broad, ovate, orbicular or reniform, cordate at base, fleshy; stem leaves 2–3 cm long.
Terrestrial herb 15–35 cm tall; tubers up to 2.5 × 1.5 cm, ovoid orellipsoid, tomentose.
Anther 5–6 mm high, curved back, apiculate; canals 2–3.5 mm long, slightly incurved.
Stigmatic arms 5.5–7 mm long, porrect, stout, enlarged and truncate at apex.
Stem erect, with 1 basal leaf and 2–7 loosely sheathing stem leaves.
Pedicel and ovary 2.5–4 cm long, the ovary with 6 toothed wings.
Inflorescence up to 7 cm long, fairly densely 1–5-flowered.
Rostellum narrowly triangular, acute, c. 4 mm long.
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