Pterostylis incognita

Flowering plant 8–13 cm tall, scape thick, stem leaves 3–5, closely sheathing. Rosette leaves 5–7, ovate to elliptic, 0.8–2 cm long, 4–11 mm wide, shortly petiolate, crowded, margins entire. Flowers 5–12, crowded, 8–10 mm long; galea porrect at base, shallowly curved for most of its length, abruptly decurved near the apex; dorsal sepal acute; lateral sepals deflexed, conjoined part broadly ovate in outline when flattened, 4–5 mm long, 5–6 mm wide, margins incurved, concave, free points broadly triangular, c. 3 mm long, spreading; petals asymmetrical, ovate, broadest towards the middle. Labellum green with a greenish black basal appendage; lamina oblong-elliptic, 2–2.3 mm long, c. 2 mm wide; appendage c. 1.5 mm long, c. 0.8 mm wide, 3-ridged, central ridge thick, higher than marginal ridges. Flowers Sep.–Oct.