Leaves 4–6, tufted, 80–150 × 2–3 mm, straight, base reddish. Flower stem 300–600 mm, 1–6-flowered. Flowers 10–13 mm across, pale yellow with reddish brown markings and callus outline. Dorsal sepal obliquely erect, 6–7.5 × 2.5–3.5 mm. Lateral sepals obliquely deflexed below labellum, 6–10 × 1.5 mm. Petals obliquely erect or recurved; stalk 2–3 mm long, blackish; blade 4–5.5 × 3.5–5 mm, with dark brown apical blotch. Labellum 5–7 mm long; lateral lobes 3–4 × 1.5–2.5 mm; midlobe flattish, broadly ovate, 3–5 × 5–7 mm, with brown apical blotch. Callus ridges 2, 3–4 mm long, parallel.
Highly localised; growing in smallish colonies among dense sedges, rushes and stunted shrubs in winter-wet swamps, depressions and seepage areas in blackish, sandy clay-loam.
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