Zhao, B., Hong, X., Huang, S.-L. and Wen, F. (2013) “<i>Primulina crassirhizoma</i> sp. nov. (Gesneriaceae) from a limestone area along the boundary of Sino-Vietnam”, Bangladesh Journal of Plant Taxonomy, 20(2), pp. 129–134. doi: 10.3329/bjpt.v20i2.17387.