Nothocladosporium
Nothocladosporium Crous, in Crous et al., Fungal Systematics and Evolution 10: 62 (2022).
Index Fungorum number: IF 844298; Facesoffungi number: FoF15886, 1 morphological species (Species Fungorum 2023), 1 species with molecular data.
Saprobic on host. Sexual morph: Unknown. Asexual morph: Mycelium consisting of hyaline, smooth-walled, branched, septate hyphae. Conidiophores macronematous, solitary, erect, subcylindrical, straight, unbranched, base bulbous, lacking rhizoids; stipe dark brown, smooth- and thick-walled, multiseptate, bearing an apical penicillate arrangement of branches that give rise to dry, branched conidial chains. Penicillate apparatus of primary and secondary branches, giving rise to conidiogenous cells; primary branches brown, aseptate, subcylindrical; secondary branches brown, aseptate, subcylindrical. Conidiogenous cells pale brown, smooth-walled, subcylindrical to clavate; polyblastic, with loci darkened and thickened, not refractive. Conidia occurring in branched chains, aseptate, pale brown, smooth-walled, guttulate; ramoconidia subcylindrical to narrowly fusoid-ellipsoid; conidia fusoid-ellipsoid, hila thickened, darkened, not refractive (adapted from Crous et al. 2022).
Type species: Nothocladosporium syzygii Crous
Notes: Nothocladosporium is characterized by macronematous, subcylindrical conidiophores, polyblastic conidiogenous cells, aseptate, pale brown conidia and narrowly fusoid-ellipsoid ramoconidia. Nothocladosporium differs from Cladosporium in that the latter has conidia with typical coronate conidiogenous loci and conidial hila while those of Nothocladosporium are just darkened and thickened, not refractive. Nothocladosporium is phylogenetically more closely related to Johansonia and Schizothyrium (Crous et al. 2010). Molecular markers available for Nothocladosporium are actA, ITS, LSU, TEF-1 and TUB2.
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