Phuong, V. X., Vu, D. Q. and Xuyen, D. T. (2014) “Genus Didymocarpus Wall. and a new record of species Didymocarpus purpureobracteatus Smith for the flora of Vietnam from Xuan Lien natural reserve, Thanh Hoa province”, Academia Journal of Biology, 36(1), pp. 46–50. doi: 10.15625/0866-7160/v36n1.4516.