Microtis unifolia (G.Forst.) Rchb.f.

Calli at the base of the labellum not united. Petals 2 mm long. Labellum 1–3 mm long, emarginate. Lateral sepals reflexed or rolled. Ovary Plant 15–60 cm high. Widespread. Chiefly in grassland. Fl. Sept.–Nov. Common Onion Orchid