Polystachya polychaete Kraenzl.

An erect epiphytic plant 14–45 cm. high.. Pseudobulbs erect, narrowly conical, 8–10 cm. high, 0.9 cm. wide, 3–4-leaved.. Leaves drying dark brown or black, suberect, ligulate, 12–18 cm. long, 0.8–2.2 cm. long, unequally roundly bilobed at apex.. Inflorescence erect, up to 26 cm. long, subtended by a long compressed sheath, cylindrical, densely many-flowered; bracts setaceous, 3–8 mm. long, acuminate.. Flowers minute, yellow, yellow-green or cream-coloured.. Dorsal sepal ovate-triangular, acuminate, 2.3 mm. long, 1.2 mm. wide; lateral sepals ovate, triangular, 2.9 mm. long, 2.25 mm. wide, acuminate.. Petals oblong or narrowly elliptic, 1.6 mm. long, 0.7 mm. wide, acute or acuminate.. Lip shortly clawed, ecallose, 3-lobed in basal half, 2.2 mm. long and wide; side lobes at right-angles to mid-lobe or slightly curved back, triangular or oblong; mid-lobe subquadrate or oblong, 1.2 mm. long, 1 mm. wide, apiculate.. Column short, fleshy, 0.8 mm. long; rostellum porrect, 2-lobed, lobes acute.