Tribulus pentadrus var. bimucronatus (Viv.) F. Al-Hemaid & Jacob Thomas in Arab Gulf J. Sci. Res., 14(2): 434 (1996). Grammitis pilifera var. munnarensis Raju Antony, A.E. Shanavas Khan, E.S. Santhosh Kumar & Jac. Thomas in J. Econ. Taxon. Bot., 20(3): 697 (1996).