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Issue: Vol. 689 No. 1: 20 Feb. 2025
Type: Article
Published: 2025-02-20
DOI: 10.11646/phytotaxa.689.1.1
Page range: 1-14
Abstract views: 223
PDF downloaded: 153

The genus Xerocomellus (Boletales, Boletaceae) in Mexico: a new species, a new record, and notes on its biocultural importance

Colegio de Postgraduados, Campus Montecillo, Edafología, Km 36.5, 56230, Montecillo, Texcoco, Estado de México, Mexico
Colegio de Postgraduados, Campus Montecillo, Edafología, Km 36.5, 56230, Montecillo, Texcoco, Estado de México, Mexico
Colegio de Postgraduados, Campus Montecillo, Edafología, Km 36.5, 56230, Montecillo, Texcoco, Estado de México, Mexico
Universidad Autónoma de Chapingo, Instituto de Horticultura del departamento de Fitotecnia, Carr. Federal México-Texcoco Km 38.5, 56230 Texcoco, México
Colegio de Postgraduados, Campus Montecillo, Edafología, Km 36.5, 56230, Montecillo, Texcoco, Estado de México, Mexico
Colegio de Postgraduados, Campus Montecillo, Edafología, Km 36.5, 56230, Montecillo, Texcoco, Estado de México, Mexico
Colegio de Postgraduados, Campus Montecillo, Edafología, Km 36.5, 56230, Montecillo, Texcoco, Estado de México, Mexico
coniferous mixed forests ectomycorrhizal fungi edible wild mushrooms one new species pine-oak forest Fungi

Abstract

Mexico has a great diversity of Boletaceae species. However, some genera, including those of the Xerocomellus, have been overlooked. This work presents a new species and a new record of Xerocomellus, together with a key to the Xerocomellus in Mexico. The new species of Xerocomellus is proposed based on morphological and phylogenetic analyses of DNA sequences from four genes (ITS, LSU, rpb1, and tef1). Xerocomellus piedracanteadensis sp. nov. forms an independent lineage from other species of the genus and is characterized by medium-sized basidiomata, dry, tomentose to rivulose or areolate pileus surface with whitish flesh staining pale yellow to pale red, with basidiospores ranging from (8)10–14(15) × (3)–5 µm, pileipellis formed by a trichoderm 300 µm thick, with terminals cells 13–55 × (8)10–23 µm, cylindrical, ovoid, subglobose to mammillate with rounded or acute apex, coarsely encrusting in lower elements ringed look wall, dark brown. Additionally, the geographical range of Xerocomellus bolinii, previously known only from Florida, the USA, is broadened to Central Mexico, and its edibility is reported for the first time. Photographs and a detailed description of the new species, the new record, and their phylogenetic analysis results are presented. An updated key for the Xerocomellus in Mexico is also presented.

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How to Cite

Pérez-Moreno, J., Fuentes-García, O., Martínez-Reyes, M., Martínez-González, C.R., Reyes, M.L., Díaz-Aguilar, I. & Ayala-Vásquez, O. (2025) The genus Xerocomellus (Boletales, Boletaceae) in Mexico: a new species, a new record, and notes on its biocultural importance. Phytotaxa 689 (1): 1–14. https://doi.org/10.11646/phytotaxa.689.1.1