Lu, Pei-Luen, and Clifford Morden. “Phylogenetics of the Plant Genera <i>Dracaena< i> and <i>Pleomele< I> (Asparagaceae)”. Botanica Orientalis: Journal of Plant Science, vol. 7, Mar. 2011, pp. 64-72, doi:10.3126/botor.v7i0.4385.