Plants 30-60 cm tall. Tuberoids palmately divided. Stem rather stout, leafy. Leaves 3-5, erect, oblong, acute, up to 12 x 3.5 cm. Inflorescence very dense, cylindric, 10 (-12) cm long. Bracts ovate-lanceolate, acuminate, exceeding the ovary. Flowers rose-violet, pleasantly scented. Dorsal sepal ovate, 5 x 3(-3.5) mm, connivent with petals forming a loose hood; lateral sepals narrower, oblong, 6x2.5(-3) mm, spreading; petals broadly obliquely-ovate, 5 x 4 mm. Labellum angular-ovate in outline, usually broader than long, 5 x 5.5 mm, cuneate towards the base, shallowly trilobed at apex, lobes rounded. Spur slender, cylindric, acuminate, ± bent outwards, exceeding the ovary, 15-18 mm long, filled with nectar. Ovary slightly twisted, glabrous.