Nandagopalan V, Anburaja V, and Prakash S. 2011. “Fly As Pollinator in Caralluma Umbellata Haw. (Asclepiadaceae) Found in the Pachamalai Hills, Eastern Ghats, Tamil Nadu”. Journal of Research in Biology 1 (6), 403-7. https://ojs.jresearchbiology.com/index.php/jrb/article/view/111.