Sydowiella
Sydowiella Petr., Annls mycol. 21(1/2): 30 (1923)
Diaporthomycetidae, Diaporthales, Sydowiellaceae, Sydowiella
Index Fungorum number: IF 5312; 9 morphological species; 5 species with sequence data.
Saprobic on dead plant material. Sexual morph: Ascomata brown, solitary, scattered, erumpent to immersed, globose, short and wide papillate, ostiolate. Peridium containing inner, thin-walled, hyaline cells of textura angularis and outer, thick-walled, brown cells of textura angularis, papilla comprising brown, elongated cells. Hamathecium comprising cellular, septate, hyaline paraphyses. Asci 8-spored, unitunicate, cylindrical, short pedicellate, apex blunt with J- apical ring. Ascospores hyaline, overlying uniseriate, oval to ellipsoid, one median septate, not limited at the septum, smooth-walled. Asexual morph: Undetermined (adapted from Maharachchikumbura et al. 2016).
Type species: Sydowiella fenestrans (Duby) Petr., Annls mycol. 21(1/2): 30 (1923)
Notes: Sydowiella taxa are mild pathogens or saprobes characterized by solitarily, erumpent ascomata without stromatic tissues and 2-celled ascospores (Kobayashi 1970). Sydowiella species are mostly distributed in temperate regions (Farr & Rossman 2018). Betula, Centaurea, Dryas, Epilobium, Juncus, Rubus, and Urtica are the common host genera from which Sydowiella species have been collected. In this entry we illustrate the sexual morph of Sydowiella fenestrans. The asexual morph of Sydowiella has not been reported.
Species illustrated in this entry
Sydowiella fenestrans (Duby) Petr.
References
Farr DF, Rossman AY. 2018 – Fungal Databases, U.S. National Fungus Collections, ARS, USDA.
Retrieved
Kobayashi T. 1970 – Taxonomic studies of Japanese Diaporthaceae with special reference to their
life-histories. Bull Gov For Exp Station Meguro 226, 1–242
Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2016 – Families of Sordariomycetes. Fungal Diversity 79, 1–317
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