The dorsal sepal is erect, 60–120 mm (2–5 in) long and 2–3 mm (0.08–0.1 in) wide. The lateral sepals are 60–120 mm (2–5 in) long and 3–5 mm (0.1–0.2 in) wide, turned downwards near their bases but then drooping. The petals are 80–120 mm (3–5 in) long and 3–4 mm (0.1–0.2 in) wide, spreading horizontally near their bases then drooping.