Leaf 150–240 × 5–7 mm, bright green. Flower stem 150–250 mm tall, relatively thick, 1–4-flowered. Flowers 17–24 × 20–30 mm, white, externally greenish white; labellum white, midlobe white with yellow marginal teeth; calli yellow; column green. Tepals with external sessile glands, tips tapered to relatively sharp points. Dorsal sepal 12–16 × 3–4 mm, erect or recurved. Lateral sepals 17–21 × 5–6 mm, obliquely decurved, divergent. Petals 16–18 × 3.5–4 mm, spreading. Labellum 6.5–8 × 6–7 mm; lateral lobes large, entire, incurved; midlobe narrow, recurved, with 6–8 blunt, yellow, marginal teeth. Basal calli 2, c. 1.3 mm long; lamina calli c. 0.8 mm long, in 2 rows to base of midlobe. Column 6–7.5 × 3 mm.
Highly localised; growing in moss pockets on shady, south-facing rock ledges under Callitris in freely draining, red-brown loam.
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