Joseph, J., and E. Vajravelu. “<I>Thrixspermum muscaeflorum< I> Rao & Joseph Var. <I>Nilagiricum< I> Joseph & Vajravelu-Orchidaceae-a New Variety from Nilgiri Hills South India”. Indian Forester, vol. 107, no. 10, Oct. 1981, pp. 648-51, doi:10.36808/if/1981/v107i10/11088.