Diuris palustris

Flowering plant slender, 6–15 cm tall. Leaves 8–15, narrow, sub-terete, 2–8 cm long, channelled, usually twisted, in a loose, erect tussock, base crimson. Flowers porrect or nodding, 1–4, yellow, spotted or blotched with dark brown, darker on outer surface, faintly spice-scented; pedicel (excluding ovary) 2–5 cm long, slender, mostly enclosed within bract; dorsal sepal erect, recurved in upper part, ovate, 7–10 mm long, purple or dark brown behind anther, yellowish elsewhere; lateral sepals parallel, deflexed, linear, 12–15 mm long, green; petals obliquely erect or recurved, 7–10 mm long, claw dark red-brown, lamina ovate, often notched, yellow, usually with dark brown vertical stripe on back. Labellum deeply 3-lobed from base, 7–10 mm long, keeled; lateral lobes slightly shorter than mid-lobe, erect, oblong, with rounded teeth at tip, entire elsewhere; mid-lobe spathulate, folded, with 2 fleshy ridges from base to beyond middle, merging into a short ridge which terminates in a rounded swelling at the tip. Column wings higher than anther. Flowers Aug.–Oct.