Mycosphaerellales » Mycosphaerellaceae

Phaeophloeosporella

Phaeophloeosporella Crous & B. Sutton, S. Afr. J. Bot. 63(5): 281 (1997).

Index Fungorum number: IF 27761; Facesoffungi number: FoF 08639, 1 morphological species (Species Fungorum 2021), molecular data unavailable.

Associated with leaf spots. Mycelium immersed, consisting of smooth, hyaline to olivaceous, branched, septate hyphae. Sexual morph: Unknown. Asexual morph: Conidiomata amphigenous, separate, pale yellow to light brown, acervular, subepidermal, base consisting of olivaceous cells of textura angularis. Conidiophores pale olivaceous, smooth, simple or branched at the base, septate, cylindrical, erect, formed from the upper cells of the conidioma. Conidiogenous cells integrated, terminal, smooth, pale olivaceous, cylindrical, straight to geniculate-sinuous with a subtruncate apex, proliferating sympodially and holoblastically. Conidia holoblastic, pale olivaceous, smooth, subcylindrical, straight to gently curved, obtuse at apex, and subtruncate at base, guttulate, euseptate, with inconspicuous hila (adapted from Crous and Sutton 1997).

 

Type species: Phaeophloeosporella ekebergiae (Syd. & P. Syd.) Crous & B. Sutton

 

Notes: Phaeophloeosporella is characterised by amphigenous, pale yellow to light brown conidiomata, cylindrical, straight to geniculate-sinuous conidiogenous cells, and holoblastic, pale olivaceous, euseptate conidia. Phaeophloeosporella is unique in having acervular conidiomata. The placement of Phaeophloeosporella in Mycosphaerellaceae is doubtful. Phaeophloeosporella needs to be recollected to resolve its phylogenetic position.

 

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