Xylariales » Xylariales genera incertae sedis

Castellaniomyces

Castellaniomyces Senan., Camporesi & K.D. Hyde, in Hyde et al., Fungal Diversity 87: 183 (2017)

Index Fungorum number: IF 553639; Facesofungi number: FoF 03562

Etymology: in honour of late Dr. Aldo Castellani (1877–1971), an eminent mycologist from Italy.

Saprobic on twigs and branches of various hardwoods trees. Sexual morph: Pseudostromata appearing as slightly raised, black patches, made up of host cells and brown to black fungal hyphae, comprising a wide darkened layer around the ostiole, and a thin, darkened, hyphal layer beneath the cuticle, spreading across the host surface forming the darkened region above the ascomata. Ascomata perithecia, immersed, solitary or aggregated, globose to sub-globose, coriaceous, black, ostiolate, short papillate. Peridium comprising dark brown cells of textura angularis. Hamathecium comprising numerous, hyaline, hyphae-like, paraphyses narrowing towards the apex. Asci 8-spored, unitunicate, cylindrical, short stipitate, apical ring J-. Ascospores uni or biseriate, asymmetrical narrowly ellipsoid with rounded or pointed ends, yellow, olive-brown, to dark brown, one septate, without germ slit guttulate, wall smooth or ornamented, sometimes with thick mucilaginous sheath. Asexual morph: Undetermined.

Type species: Castellaniomyces rosae Senan., Camporesi & K.D. Hyde

Notes: Castellaniomyces is morphologically confused with several genera in Xylariales such as Arecophila, Amphisphaeria, Atrotorquata, and Cainia. Arecophila is different from Castellaniomyces in having ascospores wall ornamentation, with or without germ slit and asci with a J+, apical ring, while Cainia has ascospores with longitudinal striations and asci with J+, apical ring. However, Amphisphaeria species which comprises J-, apical ring has germ slit which is absent in Castellaniomyces comprises. Hence, morphologically Castellaniomyces is distinct from other morphologically similar genera.

 

References:

 

Hyde KD, Norphanphoun C, Abreu VP, Bazzicalupo A, et al. 2017 – Fungal diversity notes 603–708: taxonomic and phylogenetic notes on genera and species. Fungal Diversity 87, 1–235.

 

Last update: 30 November 2021

 

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