Leaf lanceolate, 60–120 × 10–15 mm. Flower stem 200–300 mm tall, sturdy, 1-or 2-flowered. Flowers 40–50 mm across, green with red central stripes; sepals with moderately thin, yellowish clubs 6–12 × 1.5 mm long; petals lacking clubs. Dorsal sepal erect, 45–55 × 2–3 mm. Lateral sepals stiffly and obliquely decurved, 45–55 × 3–3.5 mm, slightly divergent. Petals decurved, 35–45 × 1.5–2 mm. Labellum delicately hinged, 19–20 × 18–22 mm, base pale green, with prominent white central patch and maroon to dark purple apex; basal margins with 4–6 pairs of thin green comb-teeth to 8 mm long; midlobe margins with 5–10 pairs of short, blunt teeth; tip recurved. Basal calli c. 3.5 mm long. Lamina calli to 2 mm long, slender, red, clubbed, in 4 uncrowded rows onto base of maroon patch. Column incurved, 14–16 × 4–5 mm, translucent with reddish markings: basal glands c. 3.5 mm long, narrowly club-shaped, yellow with a red stalk, shiny.
Locally common; growing among shrubs and tussocks in woodland dominated by yellow gum and Rottnest Island Pine (Callitris preissii) in freely draining, red-brown, sandy loam; also among spinifex in mallee communities on poor, sandy soil; less commonly in Black Box woodland and Buloke woodland in heavy soil.
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