Mycosphaerellales » Mycosphaerellaceae


Neoceratosperma Crous & Cheew., in Crous et al., Persoonia 32: 257 (2014).

 Index Fungorum number: IF 808935; Facesoffungi number: FoF 08516, 6 morphological species (Species Fungorum 2022), 6 species with molecular data.

Saprobic on leaf. Sexual morph: Unknown. Asexual morph: Mycelium consisting of branched, septate, brown, verruculose hyphae that turn warty with age. Conidiophores reduced to conidiogenous cells, or septate, erect, brown, verruculose, unbranched, subcylindrical, dark brown and smooth at the base. Conidiogenous cells subcylindrical, brown, verruculose, but conidiogenous apical area smooth, forming a short rachis that proliferates sympodially; loci somewhat thickened and darkened. Conidia solitary, rarely in unbranched chains, subcylindrical, medium brown, becoming dark brown, verruculose, becoming warty, distoseptate, less obvious when older (dark brown, warty), straight to irregularly curved; apex obtuse, base truncate, but scars somewhat thickened and darkened (adapted from Crous et al. 2014).

Type species: Neoceratosperma eucalypti Crous & Cheew.

Notes: Neoceratosperma has flexuous conidiophores that give rise to numerous conidia in a short sympodial rachis, conidia are solitary, nonetheless can also arise in unbranched chains, and all structures are conspicuously verruculose and have somewhat thickened, darkened hila and scars. Neoceratosperma also resembles Stenella-Zasmidium generic complex but produce distoseptate conidia. Neoceratosperma is a well-supported genus in Mycosphaerellaceae. Molecular markers available for Neoceratosperma include ITS, LSU, Actin, BTUB, Calmodulin and RPB2.


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