Karuppusamy , Subbiah, and Thammineni Pullaiah. “Two New Varieties of Caralluma Stalagmifera C.E.C. Fisch. (Asclepiadaceae) from Peninsular India”. Rheedea, vol. 17, no. 1&2, Dec. 2007, pp. 41-45, https://doi.org/10.22244/rheedea.2007.17.1-2.11.