Journal
JOURNAL OF SYSTEMATICS AND EVOLUTION
Volume 59, Issue 5, Pages 1065-1080Publisher
WILEY
DOI: 10.1111/jse.12705
Keywords
Clavicipitaceae; molecular systematics; new taxa; typification
Categories
Funding
- Ministry of Science and Technology [2018YFD0400201, 2012FY111600]
- Chinese Academy of Sciences [XDA19050201]
- Ministry of Ecology and Environment of China [2019HJ2096001006]
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This study constructed a multigene phylogeny to test and refine the current phylogenetic framework of Cordyceps s. lat. and other clavicipitaceous fungi, revealing a new Pleurocordyceps/Polycephalomyces clade. A newly designated generic name Pleurocordyceps was introduced based on phylogenetic analyses and morphological characteristics, with relevant new combinations made. Additionally, a lectotype and an epitype for P. formosus were selected, and the circumscription of Polycephalomyces was discussed.
Since the discovery of the Pleurocordyceps/ Polycephalomyces clade unaffiliated with the clades of Clavicipitaceae s. str., Ophiocordycipitaceae, and Cordycipitaceae of clavicipitaceous fungi, some taxa have been published and more fungal material relevant to the group have become available for further study. Here, a multigene phylogeny using nrSSU, nrLSU, tef1, rpb1, and rpb2 was constructed with some of the recently discovered additional taxa using maximum likelihood and Bayesian analyses (BI) to test and refine the current phylogenetic framework for Cordyceps s. lat. and other clavicipitaceous fungi. In addition to the well supported major Pleurocordyceps/Polycephalomyces clade revealed previously, another clade with newly added taxa referred to as Polycephalomyces formosus-like from Japan was found to be sister to the Pleurocordyceps/Polycephalomyces clade. Extensive investigation revealed that strains named P. formosus-like grouped in this new clade and do indeed represent the true P. formosus and that species previously included in the genus Polycephalomyces required a new generic name. Based on the phylogenetic analyses and morphological characteristics, including both sexual and asexual morphs when available, the new generic name Pleurocordyceps is introduced and relevant new combinations are made. A newly designated lectotype and a supporting epitype for P. formosus is selected and the circumscription of Polycephalomyces is discussed.
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