Flowering stem slender, 15–30 cm tall. Leaf-blade to 15 cm long, 2–3 mm diam. at base, apex erect, often partially senescent at flowering time. Flowers 8–25, small, fragrant, greenish to reddish brown, in a moderately loose spike 5–10 cm long; ovary obovoid, c. 3 mm long; sepals 5–7 mm long, dorsal sepal ovate-lanceolate, deflexed, lateral sepals linear-lanceolate, free, more or less parallel, straight or recurved; petals linear-lanceolate, 5–6 mm long. Labellum subsessile, ovate to ovate-lanceolate, 5–6 mm long, porrect at base, reflexed at about 90 deg. near middle, lamina white to pink, margins slightly irregular to more or less entire; callus plate smooth, fleshy, raised, occupying much of labellum surface, green or brownish, extending well beyond labellum bend. Column appendages linear-oblong, c. 2 mm long. Flowers Oct.–Nov.
This species has been confused with both Prasophyllum suaveolens (with which is sometimes grows) and P. occidentale, but has larger flowers and an earlier flowering time than the former and more entire labellum margins than the latter.
Apparently extinct on the basalt plains near Melbourne (e.g. St Albans, Laverton, Sunshine, Lara) but still found in grassland remnants on a few road and rail reserves further west around Wingeel, Derrinallum and Vite Vite.
