Prasophyllum collinum D.L.Jones

Plants 300–600 mm tall. Free part of leaf to 300 × 6–10 mm. Spike 80–150 mm long, 12–30-flowered. Ovary shortly stalked, green, shiny. Flowers crowded, lemon scented, 14–16 × 8–12 mm, dark greenish brown, petals white and greenish, labellum white, callus yellowish green. Dorsal sepal 9–12.5 × 4–5 mm, decurved, with 3 dark veins. Lateral sepals free, 8–10 × 1.5–2.2 mm, erect, divergent. Petals 9–12 × 1.6–1.8 mm, porrect to spreading. Labellum sessile, broadly ovate-lanceolate, recurved sharply near middle, 12–15 × 6–7. 5mm, distal margins strongly wavy/crinkled. Callus fleshy, ending just beyond labellum bend, apex notched.

Scattered on sheltered slopes of low hills in sparse woodland dominated by Weeping Sheoak with occasional eucalypts and a groundcover of sedges and Rock Fern (Cheilanthes austrotenuifolia) in stony loam and red-brown loam.