Terrestrial herb, 15 - 65cm. Foliage leaves on a separate sterile shoot. Leaves along the flowering stem sheathing. Inflorescence fairly dense with long, leaf-like bracts, often reddish. Flowers white, variably tinged with pink at the apices of the flower parts. Petals and sepals deflexed in older flowers. Lip forming a hood with a wide mouth; spurs 3-4.5cm, rarely 5cm long, mostly tucked behind the bracts.