Leaves 4-5, narrowly oblong-elliptic, 10-16 cm long, l.8-3.5 cm wide, adaxially tessellated with dark and light green, abaxially pale green. 

Scape up to 45 cm long, purple­brown, densely white-pubescent; bract broadly ovate, ca. l.4 cm long, green, purple-brown at base, hairy abaxially; pedicel and ovary up to 6 cm long, purple-brown, densely white­pubescent; flower single, ca. IO cm across; dorsal sepal green, veined with pale purple in basal half, with a maroon transverse band toward the base; synsepal green, obscurely veined with pale purple; petals pale purple, flushed with green and black-spotted in basal half; lip pale green-purple; staminode purple-black, with pale green center and margins; dorsal sepal broadly ovate, ca. 3.2 cm long, 2.5 cm wide, white-puberulous abaxially; synsepal ovate, smaller than dorsal sepal; petals spatulate, ca. 5 cm long, 2.1 cm wide, 3-denticulate apically; lip helmet-shaped, waned on its incurved side-lobes; pouch ca. 2.4 cm long, 1.8 cm wide, auriculate on both sides of its mouth; staminode transversely suboblong, ca. 8 mm long, I0 mm wide, mucronate apically.

Flowering period: March in cultivation.