Новости систематики высших растений 2019 Novitates Systematicae Plantarum Vascularium 50: 47–79 ISSN 0568-5443 O. V. Yurtseva, E.V. Mavrodiev Caelestium, genus novum (Polygonaceae, Polygoneae): evidence bаsed on the results of molecular phylogenetic analyses of tribe Polygoneae, established with consideration of the secondary structure of the ITS nrDNA regions Caelestium, genus novum (Polygonaceae, Polygoneae): обоснование, представленное по результатам молекулярно-филогенетических анализов трибы Polygoneae, предпринятых с учетом вторичной структуры локусов ITS1 и ITS2 ядерной рибосомной ДНК O. V. Yurtseva1, E. V. Mavrodiev2 O. В. Юрцева1, Е. В. Мавродиев2 1 1 Lomonosov Moscow State University Московский государственный университет имени Faculty of Biology, Department of Higher Plants М. В. Ломоносова Leninskiye Gory, 1, Bld. 12, 119991, Moscow, Russia Биологический факультет, кафедра высших растений
[email protected] Ленинские горы, 1, стр. 12, Москва, 119991, Россия
[email protected] 2 University of Florida 2 Florida Museum of Natural History Университет Флориды Gainesville, Florida, 32611, USA Флоридский музей естественной истории
[email protected] Гейнсвилл, Флорида, 32611, США
[email protected] https://doi.org/10.31111/novitates/2019.50.47 Abstract. The genus Bactria, recently described to house Atraphaxis ovczinnikovii from the Pamirs and Bactria lazkovii from the Central Tien Shan, may also include Polygonum tianschanicum from the Eastern Tien Shan. In order to re-circumscribe Bactria and to clarify the place of Polygonum tianschanicum in tribe Polygoneae, we performed Maximum Likelihood and Bayesian anal- yses of combined regions of the plastid genome and ITS1–2 regions of nrDNA for 58 species of tribe Polygoneae, with special attention to the secondary structure of pre-rRNA of the ITS1 and ITS2 loci.