2n = 24

Plant at fl. 15–90 cm. tall, slender to quite stout. Stem erect. Lf acute, overtopped by raceme, inclined to be fleshy; cauline bracts similar but much shorter. Floral bracts narrow, acute. Per. mostly greenish, except for bright reddish beard of labellum. Dorsal sepal 1–1.5 cm. long, broad-elliptic, acute, ± folded about column; lateral sepals little smaller. Petals shorter, obliquely deltoid, subacute tip directed towards dorsal sepal, us. striped. Labellum almost 2 × sepals; bare ligulate apex long and often straight; disc broad with dense long processes; base covered with very small, acute calli and on each side a short, erect, intra-marginal plate-like callus. Column-wings without basal glands.