Caladenia tensa

Flowering plant 20–30 cm tall. Leaf 6–12 cm long, 10–15 mm wide, often spotted red at base. Flowers 1 or 2; perianth segments 2.5–4 cm long, green with red central stripe, sepals bearing moderately thin orange to brown apical osmophores 6–9 mm long; dorsal sepal erect, 2–3 mm wide, tip drooping; lateral sepals projected forwards stiffly, slightly divergent, asymmetric, dilated at base, 3–3.5 mm wide, tapered to a filiform tail; petals deflexed, 1.5–2 mm wide. Labellum loosely hinged, curved forward with lateral lobes erect and tip of mid-lobe curved under, prominently 3-lobed, 18–20 mm long and 18–22 mm wide (when flattened), green at base, grading to white then with a dark purple mid-lobe; larger comb-teeth on lateral lobes 4 mm long, rising nearly to anther tip, mid-lobe irregularly and broadly toothed or scalloped; lamina calli in 4 uncrowded rows extending onto base of mid-lobe, linear to narrowly club-shaped, to 3 mm long at base of labellum, shorter and with broader heads towards apex. Flowers Sep.–Oct.