Plant at fl. to c. 40 cm. tall. Lf 7–15 mm. wide, channelled and ± keeled, forming rather well-defined V in T.S. Infl. to c. 6-fld. Per. c. 15 mm. long, between pink and blue, without stripes or spots. Sepals, petals and labellum subsimilar, elliptic, sepals more acute. Column-arms terete to plano-convex in T.S.; cilia ∞, us. very pale yellow, arising from sides, back and top of arm, mostly standing erect and above post-anther lobe; post-anther lobe tall, overtopping anther at least at sides, erect, truncate sts quite obliquely forming a deep cleft at back, us. dark red towards top, margin ± yellow, ± denticulate but not thickened or involute, often ending in front in two sharp points.
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