Komarov Botanical Institute, 197376, 2 Prof. Popov Str., St Petersburg, Russia;
Naturalis Biodiversity Center, section Botany, P.O. Box 9517, 2300 RA Leiden, The Netherlands.
Persoonia. 2014 Jun;32:141-69. doi: 10.3767/003158514X681774. Epub 2014 May 1.
This study reveals the concordance, or lack thereof, between morphological and phylogenetic species concepts within Entoloma subg. Leptonia in boreal-temperate Eurasia, combining a critical morphological examination with a multigene phylogeny based on nrITS, nrLSU and mtSSU sequences. A total of 16 taxa was investigated. Emended concepts of subg. Leptonia and sect. Leptonia as well as the new sect. Dichroi are presented. Two species (Entoloma percoelestinum and E. sublaevisporum) and one variety (E. tjallingiorum var. laricinum) are described as new to science. On the basis of the morphological and phylogenetical evidence E. alnetorum is reduced to a variety of E. tjallingiorum, and E. venustum is considered a variety of E. callichroum. Accordingly, the new combinations E. tjallingiorum var. alnetorum and E. callichroum var. venustum are proposed. Entoloma lepidissimum var. pauciangulatum is now treated as a synonym of E. chytrophilum. Neotypes for E. dichroum, E. euchroum and E. lampropus are designated.
本研究揭示了在欧亚大陆北温带的 Entoloma 亚属 Leptonia 中形态和系统发育种概念之间的一致性或缺乏一致性，结合了批判性的形态学检查和基于 nrITS、nrLSU 和 mtSSU 序列的多基因系统发育。共研究了 16 个分类群。提出了 Leptonia 亚属和 Leptonia 节的订正概念以及新的 Dichroi 节。两种新种（Entoloma percoelestinum 和 E. sublaevisporum）和一个变种（E. tjallingiorum var. laricinum）被描述为新种。基于形态学和系统发育证据，E. alnetorum 被归入 E. tjallingiorum 的一个变种，E. venustum 被认为是 E. callichroum 的一个变种。因此，提出了新的组合 E. tjallingiorum var. alnetorum 和 E. callichroum var. venustum。Entoloma lepidissimum var. pauciangulatum 现在被视为 E. chytrophilum 的同义词。为 E. dichroum、E. euchroum 和 E. lampropus 指定了新的模式标本。
