Fungalpedia – Note 2821, Gymnoascus
Gymnoascus. Baran.
Citation when using this data: Kandemir H et al. 2022 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Gymnoascaceae, Onygenales, Eurotiomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi
Variability has been noted in ascocarp morphology and pigmentation among G. reessii isolates. The presence of peridial hyphae may be extensive or rather limited, and they may be smooth or roughened; furthermore, the peridial apices may be simple or elaborate (Orr et al. 1963b). The main criterion for separating Gymnoascus corniculatus from G. reessii was the number of appendages with trifurcate or chandelieroid apical branching (almost 50% in G. corniculatus, versus infrequent in G. reessii), in addition to ascocarp size.
In the current ITS sequence data, CBS 410.72 was found in the same cluster as G. reessii at 99% identity. Given the morphological variability of G. reessii, these data led to the conclusion that G. corniculatus can be regarded as a younger synonym.
Type species: Gymnoascus reessii Baran., Bot. Ztg. 30: 158 (1872).
Other accepted species: Species Fungorum – search Gymnoascus.
References
Entry by
Hazal Kandemir, Center of Expertise in Mycology, Radboud University Medical Center/Canisius Wilhelmina Hospital, Nijmegen, The Netherlands, Division of Medical Mycology, Faculty of Medicine, University of Cukurova, Adana, Turkey
Published online 25 June 2026