Mycosphaerellales » Mycosphaerellaceae

Septopatella

Septopatella Petr., in Petrak, Ann. Mycol. 23: 128 (1925).

Index Fungorum number: IF 9889; Facesoffungi number: FoF 07587, 1 morphological species (Species Fungorum 2022), no molecular data available.

Associated with leaf spot. Sexual morph: Unknown. Asexual morph: Mycelium immersed, branched, septate, hyaline to subhyaline. Conidiomata superficial, often subtended by a superficial, pale brown, septate, branched mycelium, pulvinate, separate to occasionally aggregated, dark brown to black, finally opening widely, cupulate; basal wall of small-celled, brown, thin-walled textura angularis, becoming textura porrecta as it merges into the periclinal walls; a hypostroma attaches the conidioma to the substrate; Ostiole absent. Conidiophores hyaline, septate, branched at the base, thin-walled, cylindrical, formed from the gelatinized basal wall of the conidioma. Conidiogenous cells holoblastic, sympodial, integrated, indeterminate, cylindrical, hyaline, smooth, produced as 2–3 branches from the apex of the conidiophores. Conidia hyaline, 3–4-euseptate, thin-walled, smooth, minutely guttulate, straight or curved, occasionally irregularly filiform (adapted from Quaedvlieg et al. 2013).

 Type species: Septopatella septata (Jaap) Petr.

Notes: Septopatella is characterised by immersed, branched, septate, hyaline to subhyaline mycelium, superficial conidiomata, hyaline, septate conidiophores, holoblastic, sympodial, integrated conidiogenous cells and hyaline, 3–4-euseptate, thin-walled conidia. Septopatella must be re-collected to determine its phylogenetic position. The placement of Septopatella in Mycosphaerellaceae is doubtful.

 

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