Udayan, P. S. and Balachandran, I. (2015) “Cleistanthus sankunnianus Sivar. & Indu Balach. a Rare and Little Known Endemic Plant Rediscovered from Wild Populations in Kollam District of Kerala State, India”, Nelumbo, 48(1-4), pp. 217–218. doi: 10.20324/nelumbo/v48/2006/74103.