Perennial herb 14–37 cm. high.. Leaf 1, basal, reniform, cordate at base, up to 3 cm. long and 3.5 cm. broad, glabrous, withering before time of flowering.. Scape erect, slender, with small lanceolate acuminate scattered sheaths, sparsely pubescent towards the base, glabrous above.. Inflorescence markedly secund, 3–8 cm. long, densely many-flowered.. Bracts lanceolate, acute or acuminate, shorter than the ovary.. Flowers white.. Sepals broadly lanceolate or oblong-lanceolate, apiculate, the laterals oblique, 2.5–4 mm. long, 1-nerved.. Petals cuneate in general shape, 6–7.5 mm. long, 5-lobed in the upper third or quarter; central lobes longer than others, linear, papillose.. Lip narrowly fan-shaped from a narrow base, 4–5.5 mm. long, 3–4.5 mm. broad, shortly 5–7-lobed at the apex; lobes finger-like, papillose.. Spur incurved, narrowly cylindrical, not at all tapering, 7–8.5 mm. long.
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