Diuris chryseopsis

Flowering plant slender, 12–40 cm tall. Leaves mostly 3–5, but up to 8, linear, channelled, 8–22 cm long, in a loose, erect tussock. Flowers 1–4, drooping, lemon-yellow with brown or greenish-brown markings on outer surface; pedicel (excluding ovary) 3–5.5 cm long, slender, partly enclosed within bract; dorsal sepal erect, broadly ovate, 14–16 mm long, much shorter than other perianth parts, yellow; lateral sepals obliquely deflexed, usually parallel, linear-lanceolate, 17–22 mm long, green; petals spreading or drooping, 15–20 mm long, claw green, lamina narrowly to broadly elliptic, yellow. Labellum obliquely deflexed, yellow, 15–18 mm long, 3-lobed; lateral lobes small, asymmetrically narrow-lanceolate, apical margins toothed; mid-lobe almost flat, c. 3 times as long as the lateral lobes, broadly ovate, narrowed at base, with 2 widely separated, pubescent, longitudinal ridges extending shortly beyond base, a single, less distinct ridge continuing c. halfway along lamina. Column wings about same height as anther. Flowers mostly Sep.–Nov.