Caladenia robinsonii

Flowering plant 20–30 cm tall. Leaf 8–10 cm long, 8–10 mm wide. Flowers 1 or 2; perianth segments 2–3.5 cm long, cream to creamy yellow with red markings; sepals with slightly thickened reddish clubs 5–10 mm long; dorsal sepal 2.5–3.5 cm long, 3–4 mm wide, erect to incurved; lateral sepals 2.5–3.5 mm long, 3–4 mm wide, divergent, spreading or deflexed; petals 2–3 cm long, 2.5–3 mm wide, spreading or deflexed, flattened at base, tapered to a long acuminate apex. Labellum curved forward with apex recurved and lateral lobes erect, lamina ovate, obscurely 3-lobed, 12–14 mm long and 7–11 mm wide (when flattened), red at least distally, proximal half cream to yellowish; marginal calli on lateral lobes to 1 mm long, diminishing in size towards the entire or slightly irregular mid-lobe; lamina calli in 4 or 6 crowded rows, dark red, glossy, not extending onto mid-lobe, stout and flat-topped, to 1 mm long at base of lamina, decreasing in size towards apex. Flowers Sep.–Oct.