Terrestrial herb 45–75 cm tall.Perennating organs subterranean, tuberous, 3–5 × 2–4 cm, ovoid or ellipsoid; roots fine, 1–1.5 mm in diameter.Leaves 2–3, erect, 18–40 cm × 5–8 mm, linear, acuminate, plicate, absent or just starting to develop at flowering time.Inflorescence laxly several- to many-flowered.Pedicel and ovary 12–16 mm long; bracts 10–38 × 1–3 mm, aristate or narrowly lanceolate, acuminate.Flowers shiny green or yellow-green, the lip greenish-white with some purplish marks on the mid-lobe and purple-brown veining on the side lobes.Dorsal sepal 15–26 × 4–7 mm, lanceolate, subacute; lateral sepals 17–28 × 5–7 mm, obliquely lanceolate, acute.Petals 15–20 × 4.5–6 mm, oblong, obtuse, lying over the column.Lip 20–21 × 10–11 mm, 3-lobed in the apical third; side lobes rounded, mid-lobe 6 × 8 mm, subquadrate, truncate or emarginate, the edge erose; callus of 2 ridges terminating in papillae on mid-lobe.Spur 2–5 mm long, narrowly conical, incurved.Column 8–10 mm long, slender, arched; foot 2 mm long.Capsule pendent, 22 mm long.
A terrestrial herb 45–75 cm. tall with fine roots 1–1.5 mm. diameter. Perennating structures underground, tuberous, ovoid or ellipsoid, 3–5 cm. long, 2–4 cm. diameter. Leaves 2–3, plicate, erect, linear, acuminate, 18–40 cm. long, 5–8 mm. wide. Inflorescence produced with the young leaves, up to 75 cm. tall, laxly many-flowered; peduncle 6 mm. diameter; rhachis up to 20 cm. long; bracts aristate or narrowly lanceolate, acuminate, 10–38 mm. long, 1–3 mm. wide. Flower subnutant; sepals and petals green or yellow-green; lip green or creamy green with brown-purple venation on the side lobes; column green with purplish tip; pedicel and ovary 12–16 mm. long. Dorsal sepal lanceolate, subacute, 15–26 mm. long, 4–6 mm. wide; lateral sepals obliquely lanceolate, acute, 17–28 mm. long, 5–7 mm. wide. Petals narrowly oblong, obtuse, 15–21 mm. long, 4.5–5.5 mm. wide. Lip 3-lobed, 20–21 mm. long, 10–11 mm. wide; side lobes rounded; mid-lobe subquadrate, emarginate or truncate; callus of 2 ridges terminating in papillae on mid-lobe; spur incurved, narrowly conical, 2–5 mm. long. Column 8–9 mm. long; foot 2 mm. long. Fruit pendent, 22 mm. long.