H. Malleshappa and P. . Selva Singh Richard, “Floral Biology and Floral Visitors of <I>Psychotria nilgiriensis</I> var. <I>astephana</I> (Hook. f.) Deb et Gang. (Rubiaceae) from Kalakad Mundanthurai Tiger Reserve, Southern Western Ghats, India”, Indian Forester, vol. 137, no. 9, pp. 1049–1055, Sep. 2011.