For Reynoutria
Brandbyge, J. 1993. Polygonaceae In Kubitzki, K., J.G. Rohwer, and V. Bittrich, eds. 1993. The families and genera of vascular plants. II. Flowering plants – Dicotyledons – Magnoliid, Hamamelid and Caryophyllid families. Springer, Berlin. 653 pp. Google Scholar
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Freeman, C.C., and H.R. Hinds. 2005. Fallopia. In Flora of North America Editorial Committee. 2005. Flora of North America north of Mexico. Volume 5, Magnoliophyta: Caryophyllidae, part 2. Oxford Univ. Press, New York, NY. 656 pp. Google Scholar
Ronse De Craene, L.P., and J.R. Akeroyd. 1988. Generic limits in Polygonum and related genera (Polygonaceae) on the basis of floral characters. Bot. J. Linn. Soc. 98: 321-371. Google Scholar
Schuster, T.M., J.L. Reveal, and K.A. Kron. 2011. Phylogeny of Polygoneae (Polygonaceae: Polygonoideae). Taxon 60: 1653-1666. Google Scholar
Schuster, T.M., K.L. Wilson, and K.A. Kron. 2011. Phylogenetic relationships of Muehlenbeckia, Fallopia, and Reynoutria (Polygonaceae) investigated with chloroplast and nuclear sequence data. Int. J. Plant Sci. 172: 1053-1066. Google Scholar
Zika, P.F., and A.L. Jacobson. 2003. An overlooked hybrid Japanese knotweed (Polygonum cuspidatum × sachalinense; Polygonaceae) in North America. Rhodora 105: 143-152. Google Scholar