Rosy Eranthemum is a perennial herb growing up to 1-2 meters high. Oppositely arranged oblong lance-like leaves are 10-20 cm long. The leaf stalk is 1-3 cm long. Blue-violet flowers occur either singly in the leaf axils or in a spike 10-15 cm long, at the end of branches. Bracts are prominent whitish with green nerves. Flowers have 5 petals and two stamens emerging from the flower tube. The flowers have a strong fragrance and fade to a rosy color. It is commonly found on shady forests of the hills of Western Ghats