Diuris tricolor Fitzg.

Leaves 1–3, 200–300 × 3–4 mm, folded. Flower stem 200–500 mm, 2–6-flowered. Flowers 25–30 mm across, yellow to orange speckled with red, purple and white markings. Dorsal sepal obliquely erect, 10–15 × 6–9 mm. Lateral sepals deflexed or dangling, 20–65 × 0.2–0.3 mm. Petals obliquely erect or recurved; stalk 3–7 mm long, reddish purple; blade elliptical, 10–14 × 6–10 mm. Labellum 8–12 mm long; lateral lobes 3–4.5 × 1.5–2.5 mm; midlobe ovate, 6–9 × 6–9 mm, ridged. Callus ridges 2, 4–4.5 mm long, curved.

Widespread and often locally common, mostly occurring on plains and western slopes of ranges. Frequently grows among scattered shrubs, coarse grass and tussocks in white cypress pine woodland in freely draining, sandy soil; also occurs on ridges in drier eucalypt forests growing in gravel and laterite.

Plants can be grown from seeds.