1.Brandbyge, J. 1993: Polygonaceae, 531 – 544. – In: Kubitzki, K., Rohwer, J.G. & Bittrich, V. (ed.), The Families and Genera of Vascular Plants 2. – Berlin, Heidelberg & New York: Springer
=Phyllogonum Covillein Contr. U.S. Natl. Herb. 4: 190. 1893, nom. illeg., syn. sec. Kew WCVP (2019)3,2