New insights on the Xylaria species (Ascomycota, Xylariales) with bright-coloured exudates: Xylaria aurantiorubroguttata sp. nov. and revision of X. haemorrhoidalis and X. anisopleura type collections

Niccolò Forin; Alfredo Vizzini; Mario Amalfi; Samuele Voyron; Enrico Ercole; Simone Marcolini; Silvia Moschin; Barbara Baldan

doi:10.1186/s43008-024-00168-3

New insights on the Xylaria species (Ascomycota, Xylariales) with bright-coloured exudates: Xylaria aurantiorubroguttata sp. nov. and revision of X. haemorrhoidalis and X. anisopleura type collections

IMA Fungus. 2024 Nov 21;15(1):37. doi: 10.1186/s43008-024-00168-3.

Authors

Niccolò Forin^{1

2}, Alfredo Vizzini³, Mario Amalfi^{4

5}, Samuele Voyron⁶, Enrico Ercole⁷, Simone Marcolini^{8

9}, Silvia Moschin^{8

10}, Barbara Baldan^{8

10}

Affiliations

¹ Department of Agronomy, Food, Natural Resources, Animals and Environment, DAFNAE, University of Padova, Viale Dell'Università 16, 35020, Legnaro, Italy. niccolo.forin@unipd.it.
² Botanical Garden, University of Padova, Via Orto Botanico 15, 35123, Padua, Italy. niccolo.forin@unipd.it.
³ Department of Life Sciences and Systems Biology, University of Torino, Viale P.A. Mattioli 25, 10125, Turin, Italy. alfredo.vizzini@unito.it.
⁴ Meise Botanic Garden, Nieuwelaan 38, 1860, Meise, Belgium.
⁵ Fédération Wallonie-Bruxelles, Service Général de L'Enseignement Supérieur Et de La Recherche Scientifique, 1080, Brussels, Belgium.
⁶ Department of Life Sciences and Systems Biology, University of Torino, Viale P.A. Mattioli 25, 10125, Turin, Italy.
⁷ , Via Murazzano 11, 10141, Turin, Italy.
⁸ Botanical Garden, University of Padova, Via Orto Botanico 15, 35123, Padua, Italy.
⁹ Sant'Anna School of Advanced Studies, Institute of Crop Science, Via Luigi Alamanni 22, 56010, San Giuliano Terme, Italy.
¹⁰ Department of Biology, University of Padova, Via Ugo Bassi 58B, 35121, Padua, Italy.

Abstract

A new species of Xylaria is described based on morphological characters of both sexual and asexual morphs, and molecular data based on nuclear rDNA internal transcribed spacer, α-actin, β-tubulin and RNA polymerase subunit II sequences. Xylaria aurantiorubroguttata is characterized by the presence of both upright, cylindrical, long-stipitate and globose to subglobose, short-stipitate stromata, immature stromatal stages producing at first orange and then red drops, and ascospores with a slightly oblique, straight half spore-length germ slit. We provide also new morphological descriptions for X. haemorrhoidalis (holotype) and X. anisopleura (isosyntype), two Xylaria species belonging to X. polymorpha complex together with X. aurantiorubroguttata.

Keywords: Sordariomycetes; Xylaria aurantiorubroguttata new taxon; Xylaria polymorpha complex; Xylariaceae; Taxonomy.

Abstract

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