Apiosporopsis (Traverso) Mariani, Atti Soc. ital. Sci. nat. Mus. Civico Storia nat. Milano 50: 165 (1911)
Diaporthomycetidae, Diaporthales, Apiosporopsidaceae, Apiosporopsis
Index Fungorum number: IF268; Facesoffungi number: FoF 07773; 3 morphological species; 1 species with sequence data.
Saprobic or parasitic on living leaves and twigs. Sexual morph: Ascomata scattered, black, oval to almost sphaerical, immersed in the leaf tissue beneath a thin, well-developed clypeus, without a neck or only slightly papillate, periphysate. Peridium comprising 5–6 outer layers of dark, thick-walled cells of textura angularis and inner, thin-walled, strongly flattened cells of textura angularis. Paraphyses not observed. Asci 8-spored, unitunicate, short-pedicellate, blunt at the apex with a J-, apical ring. Ascospores 1–2-seriate, elliptical to fusoid, often slightly flattened on one side, unicellular, hyaline. Asexual morph: Coelomycetous. Stroma loculate, globose to irregular, sometimes with beaks. Conidiogenous cells phialidic, short to elongate, simple or branched. Conidia oblong or cylindrical to allantoid, 1-celled, hyaline (adapted from Senanayake et al. 2017a).
Type species: Apiosporopsis carpinea (Fr.) Mariani, Atti Soc. ital. Sci. nat. Mus. Civico Storia nat. Milano 50: 165 (1911)
Notes: Traverso (1906) erected Apiosporopsis and Mariani (1911) designated A. carpinea as the type species. Currently Apiosporopsis comprises three species: A. carpinea, A. coronillae and A. saccardoana (Senanayake et al. 2018, Index Fungorum 2020). Senanayake et al. (2017b) illustrated A. carpinea from Austria (IMI 11662), but the ascospore morphology of this collection (IMI 57187) is quite different to A. carpinea, A. coronillae and A. saccardoana. The collection illustrated here has ascospores with a central septum and apical and basal ends with pores.
Index Fungorum. 2020 – http://www.indexfungorum.org/Names/Names.asp.
Senanayake IC, Crous P, Groenewald J, Maharachchikumbura SSN et al. 2017a – Families of Diaporthales based on morphological and phylogenetic evidence. Studies in Mycology 86, 217–296.
Senanayake IC, Jeewon R, Chomnunti P, Wanasinghe DN et al. 2018 – Taxonomic circumscription of Diaporthales based on multigene phylogeny and morphology. Fungal Diversity 93, 241–443.
Senanayake IC, Maharachchikumbura SSN, Jeewon R, Promputtha I et al. 2017b – Morphophylogenetic study of Sydowiellaceae reveals several new genera. Mycosphere 8, 172–217.