White Flame-Acanthus is a shrub 6-10 ft tall. Leaves are
12 x 4 cm, nearly entire, elliptic, narrowed at both ends, nerves 7
pairs, leaf-stalk 3-6 mm long. Flowers are borne in slender, 2.5-3.7 cm
long, depressed corymb-like panicles, which are carried on 2.5-5 cm
long stalks. Flowers are pure white, tube 4 mm, limb about 2 cm. Upper
lip is notched, lower one shortly 3-lobed. Stamen filaments are as long
as the flowers. Capsule is 2.5 cm long, 3-4 mm wide, 24-seeded. White
Flame-Acanthus is found in southern Western Ghats.