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Issue: Vol. 491 No. 3: 23 March 2021
Type: Article
Published: 2021-03-23
DOI: 10.11646/phytotaxa.491.3.1
Page range: 193–216
Abstract views: 22
PDF downloaded: 1

Polygonum schischkinii is a member of Atraphaxis (Polygonaceae, Polygoneae): evidences from morphological and molecular analyses

Department of Higher Plants, Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1-12, 119 991, Moscow, Russia
Department of Higher Plants, Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1-12, 119 991, Moscow, Russia Faculty of Biology and Biotechnologies, National Research University Higher School of Economics, 117312 Moscow, Russia
Department of Higher Plants, Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1-12, 119 991, Moscow, Russia
Biological Institute, National Research Tomsk State University, Tomsk, Russia
Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
Eudicots China endemic fruit anatomy molecular analyses nomenclatural change pollen Polygonum Xinjiang

Abstract

The Chinese endemic Polygonum schischkinii was studied from both morphological and molecular points of view. On the basis of the structure of ocreas and ocreolas, P. schischkinii appears to be a member of the genus Atraphaxis. The results of Maximum Likelihood and Bayesian analyses of combined data of the plastid [rpl32-trnL(UAG) IGS, trnL(UAA) intron, trnL-trnF IGS] and nuclear rDNA ITS1–2 regions, carried out on 61 members of tribe Polygoneae, confirmed position of P. schischkinii in the Atraphaxis clade. A new combination—Atraphaxis glareosa—based on P. glareosum, which has
nomenclatural priority over P. schischkinii, is proposed. Ecological notes and a detailed distributional map of the species are also provided.