2n = 88

2n = 88

2n = 88

2n = 88

Plant at fl.10–100 cm. tall. Stem erect, ± fleshy. Lf often overtopping raceme. Raceme occ. to 30 × 1 cm., us. smaller; fls few to ∞, us. almost touching throughout. Per. green. Dorsal sepal c. 3 mm. long, tip acute and us. slightly turned upwards; laterals shorter, acute, deflexed, tips sts tending to coil under. Petals ± under dorsal sepal. Labellum oblong, often narrowest about mid-length; tip truncate to emarginate, not apiculate though sts folded to appear so; margin papillose and us. also crenate and undulate; anterior callus variously developed, verrucose, often raised on a rounded ridge; large basal calli oval, prominent, us. continuous at sides with narrow band of callus behind transverse furrow which is slit-like, not pouched; labellum standing away from ovary at very narrow angle. Base of column about as broad as stigma; wings us. membr. throughout.