Tapas Chakrabarty
4,Botanical Garden Lane, Howrah – 711 103, West Bengal, India

Gopal Krishna
Central National Herbarium, Botanical Survey of India, Howrah – 711 103, West Bengal, India

Anand Kumar
Central National Herbarium, Botanical Survey of India, Howrah – 711 103, West Bengal, India

Mahendra Nath Mitta
Department of Botany, Sri Venkateswara University, Tirupati 517502, Andhra Pradesh, India