Septorioides

Septorioides Quaedvl., Verkley & Crous, Stud. Mycol. 75: 383 (2013).

Index Fungorum number: IF 804464; Facesoffungi number: FoF 06278, 2 morphological species (Species Fungorum 2022), 2 species with molecular data.

Foliicolous. Sexual morph: Unknown. Asexual morph: Conidiomata black, unilocular, globose, flattened, opening by means of irregular rupture; wall consisting of 6–10 layers of dark brown textura irregularis to angularis, exuding a crystal conidial mass. Paraphyses intermingled among conidiophores, hyaline, cylindrical, branched at base, septate with obtuse ends. Microconidia hyaline, smooth, cylindrical, mostly straight, apex obtuse, base truncate. Conidiophores reduced to conidiogenous cells or with a supporting cell. Conidiogenous cells lining the inner cavity in basal layer, hyaline, smooth, subcylindrical to ampulliform, giving rise to macro- and microconidia. Spermatia formed in conidiomata, cylindrical, hyaline, smooth, straight to curved. Macroconidia hyaline, smooth, guttulate, subcylindrical, straight to irregularly curved, tapering in apical cell to subobtuse apex, base truncate, transversely euseptate (adapted from Quaedvlieg et al. 2013).

Type species: Septorioides pini-thunbergii (S. Kaneko) Quaedvl., Verkley & Crous

Notes: Septorioides is characterised by black, unilocular, globose, flattened conidiomata, hyaline, smooth, cylindrical microconidia, subcylindrical to ampulliform conidiogenous cells, cylindrical, hyaline, smooth spermatia, and hyaline, smooth, guttulate, subcylindrical, transversely euseptate macroconidia. Septorioides differs from Septoria in having conidiomata that open via an irregular, acervular split and paraphyses intermixed amid its conidiophores. Septorioides is morphologically and phylogenetically a distinct and well-defined genus in Saccharataceae. Molecular markers available for Septorioides include ITS, LSU, SSU, BTUB, RPB2 and TEF-1.

Septorioides

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