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Issue: Vol. 494 No. 3: 7 April 2021
Type: Article
Published: 2021-04-07
DOI: 10.11646/phytotaxa.494.3.1
Page range: 251–267
Abstract views: 21
PDF downloaded: 40

Allium toksanbaicum (Amaryllidaceae), a new species from Southeast Kazakhstan

Botanical Garden, University of Osnabrück, Albrechtstrasse 29, 49076, Osnabrück, Germany I.M. Sechenov First Moscow State Medical University Ministry of Health of the Russian Federation, Department of Pharmaceutical and Natural Sciences, Izmailovsky Boulevard 8, Moscow, 105043, Russia
Institute of Botany and Phytointroduction of the Committee of Forestry and Wildlife belong to the Ministry of Ecology, Geology and Natural Resources of the Republic of Kazakhstan, Almaty, 480070 Kazakhstan
Institute of Botany and Phytointroduction of the Committee of Forestry and Wildlife belong to the Ministry of Ecology, Geology and Natural Resources of the Republic of Kazakhstan, Almaty, 480070 Kazakhstan
Institute of Botany and Phytointroduction of the Committee of Forestry and Wildlife belong to the Ministry of Ecology, Geology and Natural Resources of the Republic of Kazakhstan, Almaty, 480070 Kazakhstan
I.M. Sechenov First Moscow State Medical University Ministry of Health of the Russian Federation, Department of Pharmaceutical and Natural Sciences, Izmailovsky Boulevard 8, Moscow, 105043, Russia
Altai State University, Lenina str., 61; 656049, Barnaul, Russia
Allium sect. Oreiprason chromosomes ITS plastid DNA Monocots

Abstract

Allium toksanbaicum from South East Kazakhstan is described as a new species. Molecular markers reveal a close relationship to A. obliquum and some other central Asian species of the section Oreiprason. We investigated the phylogenetic relationship of the new species based on sequences of two chloroplast spacers (rpl32-trnL and trnQ-rps16) and the nuclear ribosomal DNA internal transcribed spacer (ITS) region. The new species is diploid with a chromosome number of 2n = 2x = 16. A detailed morphological description, illustrations and karyotype features of the new species are given. With its falcate leaves, the new species is very similar to A. carolinianum from the section Falcatifolia, but in the shape of the inflorescence and flowers it is very different from it. From A. obliquum it differs for the purple colour of flowers and filaments, as well as the presence of teeth at the base of inner stamens.