Pseudobulbs spindle-shaped, 300–1000 × 20–30 mm, crowded, green to yellow with dark rings on nodes, ribbed, knobbly towards base, leafy for first year, then bare. Leaves 150–200 × 30–40 mm, bright green, thin-textured, often twisted. Racemes erect, 80–150 mm long, densely crowded and bottlebrush-like. Flowers semi-tubular, 15–25 × 10–18 mm, white, greenish, cream or pink with dark green, shiny labellum apex. Sepals and petals not widely spreading, thick-textured, blunt. Dorsal sepal 8–10 × 4 mm. Lateral sepals 7–9 × 5–6 mm. Petals divergent, 8–10 × 3 mm. Labellum c. 16 × 4 mm, fleshy, tightly embracing column; basal part hollow with transverse ridge; apical part broad, dark green and shiny.
Widespread and common, especially in tropical lowlands, but extending to moderate altitudes in mountain ranges. It grows on trees in open forest, woodland, along rainforest margins, monsoonal thickets and on palms and trees in swamps. It is also sometimes found growing in hollow limbs or in clumps of other large epiphytes, occasionally on rocks and boulders, rarely on mangroves.
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