Atopospora
Atopospora Petr., Annls mycol. 23(1/2): 100 (1925).
Index Fungorum number: IF 450; Facesoffungi number: FoF 06356, 4 morphological species (Species Fungorum 2022), no molecular data available.
Saprobic on host. Sexual morph: Stroma subcuticular, black, with several ascogenous globose locules in a single layer. Asci cylindrical-clavate, 8-spored. Ascospores ellipsoidal to cylindrical, septate towards the upper end of the spore, not or very slightly constricted at the septum, initially hyaline, becoming yellowish to olivaceous when mature. Asexual morph: Unknown (adapted from Fakirova 1997).
Type species: Atopospora betulina (Fr.) Petr.
Notes: Atopospora is characterised by subcuticular black stromata with numerous acrogenous globose, cylindrical-clavate, 8-spored asci and ellipsoidal to cylindrical, septate ascospores. Müller and Arx (1962) referred Atopospora to Venturiaceae based on the multiloculate ascostromata, fusoid asci and lightly pigmented, bi-seriate, apiospores. Molecular data is lacking. Fresh collections with DNA sequence data are needed to confirm the systematic position of Atopospora.
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