Diuris immaculata D.L.Jones

Leaves 4–6, tufted, 40–80 mm × 1–3 mm. Flower stem 80–150 mm tall, 1–3-flowered. Flowers 12–15 mm across, pure golden-yellow, unmarked. Dorsal sepal obliquely erect, 9–14 × 5–7 mm. Lateral sepals obliquely deflexed below labellum, parallel, 10–16 × 2.5–4 mm, green. Petals obliquely erect; stalk 3–4 mm long, green; blade 7–12 × 6–8 mm. Labellum 10–13 mm long; lateral lobes 4.5–7 × 2.5–4 mm, erect and flanking column; midlobe convex, margins strongly downcurved, ovate to wedge-shaped when flattened, 8–11 × 7–11 mm. Callus ridges 2, 4–5 mm long, sometimes stained orange.

Highly restricted and rarely seen; grows among forbs, shrubs and low trees in shrubland in seasonally wet patches of sand and laterite.