Terrestrial herb perennating by tubers.Fertile shoots 30–90 cm tall; cauline leaves imbricate, mostly sheathing, 4–8 cm long, lanceolate, acute.Inflorescence dense, (5)10–25 cm long, cylindric, flowers numerous.Floral bracts 1.5–2 cm long, narrowly ovate to lanceolate, acuminate, overtopping the flowers or rarely the apex deflexed.Flowers facing down, white; sepals with green and purple spots.Dorsal sepal galeate; galea 5.5–6.5 mm long, 4–4.5 mm wide and c. 2 mm deep, elliptic-ovate, subacute.Spur 9–11 mm long, cylindric,horizontal from a small conical base, soon decurved, (apparently ascending at the base because the galea faces downwards).Lateral sepals 5–5.5 mm long, oblong, obtuse.Petals 4.5–5 mm long, oblong, obliquely acute, mid-vein falcately curved.Lip 3–5 × 1.3–2 mm, elliptic-spathulate, subacute.Rostellum 1.5–2 mm tall, lateral lobes parallel.Anther 1.5–2 mm long.Stigma stipitate.Ovary c. 1 cm long.