A terrestrial herb 2–5 dm. high, glabrous except for the roots and lip.. Tubers ovoid or ellipsoid, 1.8–2.5 cm. long, 1–1.7 cm. in diameter, ± tomentose.. Stem erect, rather slender, with the leaves spaced out along it.. Leaves 4–6, the lowermost 1–2 reduced to short truncate sheaths, the middle 1 or 2 suberect, with the lower part of the lamina sheathing but somewhat distended, the upper part lanceolate or lanceolate-elliptical, acute, the whole 3–5.5 cm. long, 1–2 cm. broad, the upper 1 or 2 lanceolate, acute, a little smaller, similar to the bracts.. Inflorescence 5–12 cm. long, 3–6.5 cm. in diameter, rather closely 4–11-flowered.. Bracts leafy, broadly lanceolate or almost ovate, acuminate, 1.5–3.5 cm. long, the lower ones longer than the pedicel with ovary.. Flowers suberect, white and green, fragrant; pedicel with ovary somewhat curved, ± 2 cm. long.. Dorsal sepal erect, very convex, ovate or lanceolate, acute, 1.1–1.4 cm. long, 5.5–8 mm. broad; laterals spreading and curved upwards, very obliquely lanceolate, acuminate, 1.3–1.9 cm. long, 7–9 mm. broad.. Petals bipartite nearly to the base; posterior (upper) lobe erect, curved-ligulate, subacute, 9.5–13 mm. long, 1–2 mm. broad; anterior lobe erect, linear or ligulate, 6–11 mm. long, just over 1 mm. broad.. Lip projecting forwards and downwards, tripartite from an undivided base ± 2mm. long; middle lobe oblong-lanceolate, acute, 1.4-2.7 cm. long, 5–7.5 mm. broad; side lobes diverging, oblanceolate, subacute, 10–15 mm. long, 2.5–5.5 mm. broad; all lobes velvety papillose.. Spur pendent, slightly thickened towards the apex, 12–15 mm. long.. Anther erect, 5–6.5 mm. high, canals porrect, 3.5–5 mm. long.. Stigmas porrect, apices abruptly widened and truncate, 4.5–6.5 mm. long.. Rostellum triangular, acute, ± 2 mm. long.
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Lip velvety-papillose, 3-lobed with an undivided base 1–3.5 mm long; mid-lobe 14–27 × 4.5–7 mm, oblong-lanceolate, acute; side lobes diverging, 10–16 × 2.5–5.5 mm, oblanceolate; spur 12–15 mm long, pendent, swollen to c. 3 mm diameter at apex.
Dorsal sepal erect, 11–15 × 5.5–8 mm, lanceolate or ovate, acute, convex; lateral sepals spreading and curving up, 12.5–19.5 × 7–9 mm, obliquely lanceolate, acute.
Petals divided almost to base, both lobes erect; upper lobe 9.5–13 × 1–2 mm, ligulate, curved; lower lobe 5.5–11 × 1–2 mm, linear or ligulate, very fleshy.
Leaves 3–6, the lowermost 1–2 sheathing, the mid-stem leaves clasping the stem, 3–6.5 × 1–2 cm, lanceolate, acute; the upper ones bract-like.
Inflorescence to 12 × 6.5 cm, densely few to several-flowered; bracts leafy, 1.5–3.5 cm long.
Stigmatic arms 4.5–6.5 mm long, porrect, enlarged and truncate at the tips.
Slender terrestrial herb 20–50 cm tall; tubers 2–3 × 1 cm, ellipsoid.
Flowers sweetly scented, sepals green, petals and lip whitish-green.
Anther erect, 5–6.5 mm high; canals 3.5–5 mm long, porrect.
Pedicel and ovary c. 2.5 cm long, somewhat curved.
Rostellum mid-lobe c. 2 mm long, triangular.
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