Duma is considered a genus, after T M Schuster; who studied the phylogenetics of some Polygonum species. These tiny species are all belonging to ATP clade. Otherwise it was classified as Muehlenbeckia
Jet, Three species are included, i.e. D.coccoloboides, D.florulenta and D. horrida.
↑Tavakkoli, S.; Osaloo, S.K.; Mozaffarian, V. & Maassoumi, A.A. 2015. "Molecular phylogeny of Atraphaxis and the woody Polygonum species (Polygonaceae): Taxonomic implications based on molecular and morphological evidence". Plant Systematics and Evolution. 301: 1157–1170
↑SCHUSTER, T.M., WILSON, K.L. & KRON, K.A. 2011. Phylogenetic relationships of Muehlenbeckia, Fallopia, and Reynoutria (Polygonaceae) investigated with chloroplast and nuclear sequence data Int. J. Plant Sci. 172(8):1053–1066. 2011.