Claim: Diuris curta flowers from August to early October and its labellum at 10–12 mm (0.39–0.47 in) long has three lobes, with the centre lobe being egg-shaped to wedge-shaped, and both side lobes being oblong to egg-shaped.
Evidence: Flowering occurs from August to early October. The labellum is 10–12 mm (0.39–0.47 in) long and has three lobes. The centre lobe is egg-shaped to wedge-shaped, 7–11 mm (0.3–0.4 in) long and 8–12 mm (0.3–0.5 in) wide and the side lobes are oblong to egg-shaped, 3–5 mm (0.1–0.2 in) long and 2–3.5 mm (0.08–0.1 in) wide.