Caladenia ampla

Flowering plant 15–22 cm tall. Leaf 6–10 cm long, 5–7 mm wide. Flowers solitary (rarely 2); perianth segments 2.8–3.7 cm long, cream to yellowish with reddish streaks, sometimes wholly reddish; dorsal sepal 3–3.7 cm long, 2.5–3 mm wide, oblong-lanceolate basally, tapered and ending in a thickened osmophore 6.5–9 mm long; lateral sepals 3–3.7 cm long, 4–5 mm wide, ovate-lanceolate basally, tapered and ending in a thickened osmophore 6–8 mm long; petals 2.8–3.2 cm long, 2–3 mm wide, narrow-lanceolate basally, tapered to an acuminate tip, sometimes with an apical cluster of glands. Labellum curved forward with apex recurved, lamina broadly ovate, unlobed or obscurely 3-lobed, 14–16 mm long, 10–12 mm wide (when flattened), cream with prominent red veins and dark red apex; marginal calli in 9–12 pairs, 1–2.5 mm long at base, reducing in length distally; lamina calli in 4 rows, extending half to two-thirds of way to labellum apex, linear to foot-shaped, c. 2 mm long at base of lamina, decreasing in size towards apex. Flowers Sep.–Oct.