Diuris pedunculata R.Br.

(Approximate measurements based on the type specimens and R.D. Fitzgerald’s drawings) Leaves 1 or 2, filiform, 50–200 × 1–2 mm, straight. Flower stem 60–150 mm, 1–3-flowered. Flowers suberect, c. 14–1
 across, yellow with dark petal stalks and dark streaks on base of dorsal sepal and labellum lateral lobes. Dorsal sepal porrect at base then recurved or wholly obliquely erect, c. 7–8 × 3–4 mm. Lateral sepals obliquely deflexed below labellum, 10–15 × 2.5–3 mm. Petals spreading; stalk c. 4 mm long, dark; blade elliptical, yellow, c. 7–8 × 3–4 mm, apex pointed. Labellum c. 8–10 mm long; lateral lobes oblong, with dark streaks, c. 3 × 1.2 mm, apical margins irregularly toothed; midlobe ovate, c. 6–8 × 3–5 mm, flat. Callus ridges 2, 3–4 mm long, apparently papillate, a third central ridge extending well onto midlobe.

Highly restricted and rarely seen; usually growing in small groups on seasonally moist to wet grassy slopes in sparse forest in rich, loamy basalt soil; also herb fields in moist peaty soil, margins of wet areas and among granite boulders in gravelly loam.

It can be grown from seed.