Diuris sp. aff. dendrobioides (Bairnsdale)

Flowering plant usually 20–30 cm tall, slender to moderately stout. Leaves 1 or 2, linear, channelled, 10–25 cm long. Flowers 1–5, erect, white to pale mauve, often with darker lilac spots and suffusions; pedicel (excluding ovary) 2–5 cm long, mostly enclosed within bract; dorsal sepal erect, broadly ovate, 10–15 mm long; lateral sepals deflexed, usually parallel, narrow-linear, greatly exceeding petals, 40–50 mm long; petals obliquely erect or recurved, ovate to elliptic, tapering to base, 10–15 mm long. Labellum 3-lobed from base, 10–13 mm long; lateral lobes erect, about half as long as mid-lobe, oblong, margins entire; mid-lobe keeled, long-clawed, broadly fan-shaped, margins irregular, with 2 longitudinal yellow ridges from the base ending in tooth-like processes around midway along lamina. Column narrowly winged. Flowers Oct.-Nov.