Thelymitra frenchii Jeanes

Leaf erect or curved, 60–120 × 5–12 mm, fleshy, pale green. Flower stem 50–140 × 1.5–3 mm, 1–3-flowered, purplish. Sterile bracts 1 or 2. Flowers 18–25 mm across, blue. Sepals and petals 8–12 × 3.5–6 mm, concave. Column 5–5.5 × 2.5–3 mm, pale blue; post-anther lobe 2–3 × 1.5–2.5 mm, mostly yellow with narrow purplish collar, tubular, with broad, shallow V-notch; column arms converging, 1–1.3 mm long, erect; hair-tufts toothbrush-like, white, hairs 0.6–0.9 mm long.

Highly localised; found growing in shallow soil pockets on granite outcrops in jarrah forest.