Stems with many leaves; internodes 13-15 cm; leaves oblong-lanceolate, 8-18 cm long, 2-5 cm wide, obtuse at base, pointed at apex; flowers very large; sepals and petals oblanceolate, 8-9 cm; labellum 3-lobed, soldate from gynostemium almost to apex; papillate disc; capsule up to 8 cm.