Fragosphaeria Shear, Mycologia 15(3): 124 (1923)
Diaporthomycetidae, Ophiostomatales, Ophiostomataceae, Fragosphaeria
Index Fungorum number: IF 2011; 2 morphological species; 2 species with sequence data.
Saprobic on wood. Sexual morph: Ascomata solitary, superficial, carbonaceous or coriaceous, globose, black, glabrous or surrounded by hyaline hyphae. Asci 8-spored, unitunicate, globose. Ascospores ovoid to reniform, aseptate, guttulate, smooth-walled. Asexual morph: Hyphomycetous. Conidiophores hyaline, branched. Conidia hyaline, aseptate, suballantoid to ellipsoidal (copied from Huang et al. 2021).
Type species: Fragosphaeria purpurea Shear, Mycologia 15(3): 124 (1923)
Notes: Fragosphaeria is typified by F. purpurea and has cleistothecial ascomata, globose asci and reniform ascospores (Shear 1923). Chesters (1935) transferred this genus to Cephalotheca based on similar morphologies. In the study by Huang et al. (2021), it was found that the sexual characteristics of Fragosphaeria are similar to members of Eurotiales (Eurotiomycetes), but the asexual morph is unknown. However, Suh and Blackwell (1999) found that F. purpurea is closely related to Ophiostoma (Ophiostomatales) based on LSU and SSU sequence analyses. Hence, Fragosphaeria is accepted as a genus in Ophiostomataceae (Diaporthomycetidae) (Hyde et al. 2020) (copied from Huang et al. 2021).
Species illustrated in this section:
Fragosphaeria purpurea Shear
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