Prasophyllum viretrum

Flowering stem 20–40 cm tall. Leaf-blade to 30 cm long, 2–3 mm diam. at base, dark green, apex lax, often withered at flowering. Flowers 12–35, fragrant, greenish brown to brownish, sessile in a moderately dense to dense spike 8–15 cm long; ovary obovoid, 5–6 mm long, green; sepals 7–9 mm long, dorsal sepal ovate-lanceolate, deflexed, lateral sepals free, linear-lanceolate, widely divergent, recurved distally; petals 6–7 mm long, linear-lanceolate, porrect or spreading, blunt. Labellum ovate, 6.5–7.5 mm long, white or pinkish, recurved at right angles just above the middle, margins crenulate to crispate; apex apiculate; callus plate much-raised, broad, extending three-quarters of way to labellum apex. Column appendages oblong, c. 3 mm long, truncate. Flowers Oct.–Dec.