Heberle’s spider orchid

Description

Caladenia heberleana is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, 80–200 mm (3–8 in) long and 5–15 mm (0.2–0.6 in) wide. Up to three flowers 80–120 mm (3–5 in) long and 60–120 mm (2–5 in) wide are borne on a stalk 200–450 mm (8–20 in) tall. The flowers are red, white and pale yellow with spreading lateral sepals and petals, all of which have thickened, club-like glandular tips. The lateral sepals and petals spread widely but directed downwards below the horizontal. The dorsal sepal is erect, 40–100 mm (2–4 in) long and about 3 mm (0.1 in) wide and the lateral sepals are 40–100 mm (2–4 in) long and 3–6 mm (0.1–0.2 in) wide. The petals are 40–85 mm (2–3 in) long and 2–4 mm (0.08–0.2 in) wide. The labellum is white, 17–26 mm (0.7–1 in) long and 10–15 mm (0.4–0.6 in) wide with a maroon tip which is curled under. The sides of the labellum have spreading teeth up to 5 mm (0.2 in) long and there are four rows of pale to deep red calli up to 3 mm (0.1 in) long, along the centre of the labellum. Flowering occurs from September to October.