Caladenia iridescens

Flowering plant slender, 10–25 cm tall, usually purplish. Leaf linear, 5–10 cm long, 1–2 mm wide. Flowers 1 or 2, dusky red or purplish to greenish brown, often with iridescent golden tints; ovary c. 5–7 mm long; perianth segments 11–15 mm long, 2–3.5 mm wide, acute, thickish, both sides with scattered glands; dorsal sepal linear-obovate, more or less hooded, curved at about the middle, embracing the column; lateral sepals and petals spreading or curved upwards, narrow-elliptic to narrow-lanceolate, asymmetric, lateral sepals broader than petals, divergent to crossed. Labellum on short claw, 3-lobed, 5–6 mm long, whitish, with red or purple transverse bars; lateral lobes with wedge-shaped anterior corner, basal margins entire, distal margin sometimes with a few long blunt teeth or clubbed calli; mid-lobe triangular, recurved, glandular, dark purple, fringed with stalked, granular-headed, purple calli becoming sessile towards apex; lamina calli in 4 crowded rows, extending from base to apex, becoming sessile near apex, heads purple and granular. Column incurved, narrowly winged at base, expanded above, with red or purple markings; anther with short point. Flowers Oct.–Nov.