Leaf fully developed at flowering, 120–200 × 8–12 mm, greenish brown, not pruinose. Flower stem 300–400 mm tall, 2 sterile bracts, 2–5-flowered. Flowers lasting 2–5 days, 20–25 × 12–15 mm; sepals and petals dark brownish green with red markings; labellum with brownish purple papillae and paler glandular hairs. Dorsal sepal obliquely erect, 10–13 × 7–8 mm, erect. Lateral sepals divergent, 11–13 × 4–5 mm, margins incurved. Petals spreading, 7–8 × 5–6 mm. Labellum flat in profile, 18–22 × 7–9 mm, broadly obovate in outline, suddenly contracted into a tapered portion; basal part with short, thick, purple papillae; central part with coarse, hair-like papillae to 5 mm long; apical part with a short glandular tail 2–3 × 0.5 mm; labellum margins with numerous thin, spreading, greenish to greyish lobes to 7 mm long, most glandular. Column 4.5–5.5 × 4 mm, with 2 yellowish sham eyes connected by a purplish ridge.
Leaf fully developed at flowering, 180–400 × 4–8 mm, pruinose. Flower stem 280–500 mm tall, pruinose, 2–6-flowered. Flowers lasting 2–4 days, 25–30 × 12–15 mm, pale green; sepals with light red markings; petals boldly marked; labellum papillae dark purple. Dorsal sepal obliquely erect, 12–14 × 8–9 mm. Lateral sepals divergent, 12–14 × 4–5 mm, margins incurved. Petals porrect, 7–8 × 5–5.5 mm, apex upcurved. Labellum flat in profile, 22–24 × 6.5–7 mm, obovate in outline, broadly tapered to apex; basal part with short, thick, purple papillae; central part with purple, glandular and non-glandular papillae to 6 mm long; apical part with glandular tail 2.5 mm long; labellum margins with numerous glandular and non-glandular, acuminate lobes to 4 mm long. Column 4.5–5.5 × 4 mm, with 2 eye-spots connected by a faint ridge.
An orchid.