2n = 40

Plant at fl. c. 5–20–(30) cm. tall. Stem erect, slender, ± pilose below, glandular-pubescent above. Green lf solitary, narrow-linear, us. shorter than peduncle, sparsely clad in both short glandular and longer non-glandular hairs. Floral bracts 1–5, lower 1–2 often empty. Fls 1–3–(5) in lax raceme, ovary us. > bract. Per. (in N.Z.) c. 1–2 cm. diam., white, greenish, pink or darker green and red, glandular-hairy externally. Sepals narrow-lanceolate and acute; dorsal ± erect; lateral spreading or deflexed. Petals similar to lateral sepals. Labellum 3-lobed; mid-lobe narrowly triangular, recurved, mostly with marginal calli; lateral lobes broad, transversely barred with red; calli in 2 ± regular rows on disc. Column ± erect, often transversely barred with red; wings narrow below, widest about level of stigma.