Funiliomycetaceae L. X. Mi, K. D. Hyde, H. Y. Song & D. M. Hu 2026, fam. nov.

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Funiliomycetaceae L. X. Mi, K. D. Hyde, H. Y. Song & D. M. Hu fam. nov. Etymology. Name refers to the type genus Funiliomyces. Type genus. Funiliomyces Aptroot, Studies in Mycology 50 (2): 309 (2004). Description. Saprobic, endophytic, or epiphytic on diverse plant hosts in tropical to temperate regions. Sexual morph: Ascomata black, subglobose, immersed to erumpent. Wall composed of irregular layers of regularly melanized, flattened cells, with no color change in KOH. Paraphyses absent. Asci cylindrical, 8 - spored, with a thickened apex bearing a central refractive, IKI-negative apical apparatus, and enclosed by parenchymatous tissue. Ascospores pale brown, torpedo-shaped, 2 - septate, upper cell pointed, lower cell rounded, hyaline granules or oil droplets, bearing two hyaline mucilaginous appendages. Asexual morph: Mycelium consisting of branched, septate, smooth, hyaline to pale brown hyphae, s ometimes forming hyphal ropes. Conidiophores macronematous, mononematous, solitary or in small groups, erect, straight to flexuous, subcylindrical to cylindrical (apex sometimes inflated), simple or occasionally branched, hyaline to brown, septate, sometimes reduced to conidiogenous cells. Conidiogenous cells integrated, terminal or lateral, sympodial, mono- to polyblastic, hyaline to brown, cylindrical to clavate, with flat-tipped or denticulate apices; denticles (when present) large, cylindrical to geniculate, cylindrical, truncate, or pimple-like, or lacking entirely. Conidia solitary, hyaline to pale smoky, smooth, septate, narrowly fusiform to cylindrical, with obtuse, subobtuse, or tapering apices and truncate or rounded bases; dimensions variable among species. Notes. A new family, Funiliomycetaceae, is proposed to accommodate a distinct, strongly supported clade comprising the genus Funiliomyces and several related lineages historically identified as “ Dactylaria ”. Funiliomycetaceae shares general sexual characters with Amphisphaeriales, including immersed to semi-immersed ascomata and unitunicate asci with an apical ring (Aptroot 2004). However, the family is readily distinguished from all currently accepted families in the order by its unique ascospore morphology: the ascospores are fusiform, consistently biseptate, and bear both apical and median appendages, a combination of characters not reported in other families of Amphisphaeriales (Aptroot 2004). The asexual morph of Funiliomycetaceae is hyphomycetous, characterized by conidiogenous cells that are sympodial, terminal or lateral, integrated, and denticulate (when present, denticles are large and cylindrical to geniculate), producing solitary, hyaline to pale smoky, smooth, septate, narrowly fusiform to cylindrical conidia with obtuse to tapering apices and truncate or rounded bases. Funiliomycetaceae shares similar sexual features with Nothodactylariaceae (Nothodactylaria), such as Nothodactylaria nephrolepidis (Cours et al. 2019 b). However, Funiliomycetaceae is phylogenetically distinct from the families in Amphisphaeriales, as supported by multi-locus phylogenetic analyses (Fig. 2) and inter-familial genetic distance comparisons (Table 3).

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.