Dovana Francesco, Scali Edoardo, Lopez Del Visco Clarissa, Moreno Gabriel, Para Roberto, Lechner Bernardo Ernesto, Garbelotto Matteo, May Tom W
Dipartimento di Bioscienze, Biotecnologie e Ambiente (DBBA), Università degli Studi di Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy.
Department of Environmental Science, Policy and Management, University of California, 54 Mulford Hall, Berkeley, CA 94720, USA.
J Fungi (Basel). 2025 Aug 1;11(8):575. doi: 10.3390/jof11080575.
The taxonomy of , the type species of the genus , has long been ambiguous due to the absence of a reference sequence and the reliance on early, morphology-based descriptions. To resolve this issue, we selected a Code-compliant lectotype for -the basionym of -from Schaeffer's 1762 illustration cited in Fries' sanctioning work. Given the limitations of this historical material for modern species interpretation, we also designated an epitype based on Singer's collection C4083 (BAFC) from Femsjö, Sweden, which was previously but not effectively designated as the "lectotype" by Singer. This epitype is supported by detailed morphological descriptions, iconography, and newly generated nrITS, nrLSU, and sequences, which have also been newly obtained from additional collections. Phylogenetic analyses consistently place the epitype of within a well-supported clade, herein designated as/, which includes sequences previously reported as falling within the "proxima 1 clade". This integrative approach, combining historical typification with modern molecular and morphological data, stabilizes the nomenclature of and provides a robust foundation for future studies of this ecologically and economically important genus of ectomycorrhizal fungi.
由于缺乏参考序列且依赖早期基于形态学的描述，该属的模式种的分类长期以来一直不明确。为了解决这个问题，我们从弗里斯认可著作中引用的舍费尔1762年的插图中，为该属的基原异名选定了一个符合法规的选模式。鉴于这些历史材料在现代物种解释方面的局限性，我们还根据辛格从瑞典费姆舍采集的C4083号标本（BAFC）指定了一个新模式，该标本此前被辛格指定为“选模式”，但未得到有效指定。这个新模式得到了详细的形态学描述、图像以及新生成的nrITS、nrLSU和序列的支持，这些序列也是从其他标本中重新获得的。系统发育分析一致将该属的新模式置于一个得到充分支持的分支内，在此指定为/，其中包括先前报道属于“proxima 1分支”的序列。这种将历史模式选定与现代分子和形态学数据相结合的综合方法，稳定了该属的命名，并为未来对这种具有生态和经济重要性的外生菌根真菌属的研究提供了坚实的基础。
