Prasophyllum australe R.Br.

Plants 600–900 mm tall. Free part of leaf to 350 × 7–10 mm. Spike 100–180 mm long, 10–60-flowered. Ovary sessile, long, green, appressed to stem. Flowers well-spaced to crowded, strongly scented, 16–20 × 12–15 mm, greenish, yellowish or brownish with reddish stripes, labellum lamina crystalline white, callus yellowish green. Dorsal sepal 8–10 × 3–4 mm, decurved. Lateral sepals erect, usually fused, each sepal 8–10 × 3 mm. Petals 6–8 × 3 mm, spreading or incurved. Labellum sessile, sharply recurved near middle, 8–11 × 2.5–4 mm, margins intensely wavy/crinkled. Callus raised, channelled, extending well past labellum bend, ending in 2 raised bumps.

Widespread and common; found growing in a wide range of habitats including open forest, woodland, bogs, swamps and swamp margins, heathland, sedgeland, buttongrass moorland and grassland in seasonally moist to wet, sandy soil, clay and peat.

The tuber is eaten.

The plant is stimulated by fire.