Bradshaw Michael J, Braun Uwe, Götz Monika, Pfister Donald H
Herbaria and Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Avenue, Cambridge, MA 02138.
Department of Geobotany and Botanical Garden, Institute of Biology, Herbarium, Martin Luther University, Neuwerk 21, Halle (Saale) 06099, Germany.
Mycologia. 2022 Oct 12:1-14. doi: 10.1080/00275514.2022.2115420.
The second contribution to a new series devoted to the phylogeny and taxonomy of powdery mildews is presented. An overview of species is given, including references to ex-type sequences or, if unavailable, representative reference sequences for phylogenetic-taxonomic purposes are provided. The new species is described, and is reduced to synonymy with . Epitypes with ex-epitype sequences are designated for , and . Based on phylogenetic analyses, it has been demonstrated that is confined to its type host, (= ), and other North and South American parasites on Asteraceae hosts, previously assigned to this species, pertain to . The first record of from Europe (Germany) on cultivated was confirmed by sequencing. Sequence analysis of type material of reveals that this species should be excluded from ; however, the true affinity of this taxon is not yet clear.
本文呈现了关于白粉菌系统发育和分类学新系列的第二篇论文。文中给出了物种概述，包括对模式菌株序列的引用，若无法获取模式菌株序列，则提供用于系统发育分类目的的代表性参考序列。描述了新物种，并将 归为 的异名。为 和 指定了带有后选模式序列的后选模式。基于系统发育分析，已证明 局限于其模式寄主 （= ），而之前归为此物种的其他北美和南美菊科寄主上的寄生物属于 。通过测序证实了 在欧洲（德国）栽培的 上的首次记录。对 的模式材料的序列分析表明，该物种应从 中排除；然而，这个分类单元的真正亲缘关系尚不清楚。
