Diuris ochroma
D.L.JonesFlowering plant slender, 25–37 cm tall. Leaves 3–5, linear, channelled, 13–18 cm long, in loose, erect tussock. Flowers 2 or 3, drooping, pale yellow-cream with maroon striations on outer surface of petals and labellum and on both surfaces of dorsal sepal; pedicel (excluding ovary) c. 3 cm long, slender, partly enclosed within bract; dorsal sepal erect, ovate, c. 12 mm long, much shorter than other perianth parts; lateral sepals obliquely deflexed, parallel, linear-lanceolate, c. 15 mm long, green; petals spreading or drooping, c. 15 mm long, claw maroon, lamina elliptic. Labellum c. 15 mm long; lateral lobes small, asymmetric, triangular, outer margin irregularly toothed from base to tip; mid-lobe more than 3 times as long as lateral lobes, broadly ovate to wedge-shaped, narrowed at base; callus ridges complexly lobed, with faint accessory ridges radiating onto the mid-lobe. Column wings higher than anther. Flowers Nov.–Dec.
HSF, HNF, VAlp. Also NSW. Known only from the Wonnangatta River valley east of Mt Howitt and the Buffalo River near Abbeyard, where locally abundant in moist grassland near Eucalyptus woodland.
Entwisle, T.J. (1994). Orchidaceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons, pp. 740–901. Inkata Press, Melbourne.