Acrodontium de Hoog, Stud. Mycol. 1: 23 (1972).
Index Fungorum number: IF 7035; Facesoffungi number: FoF 09159, 17 morphological species (Species Fungorum 2022), 12 species with molecular data.
Saprobic or mycophylic. Sexual morph: Unknown. Asexual morph: Mycelium comprising sub hyaline, brownish or olivaceous, smooth, thin-walled, septate hyphae. Conidiophores when present arising from hyphae, erect or procumbent, occasionally thick-walled and dark brown at the base, paler brown towards the apex, branched verticillately or dichotomously. Conidiogenous cells integrated, terminal in conidiophores and frequently forming whorls or conidiophores reduced to conidiogenous cells, arising from hyphae, basal part flask shaped or elongate, tapering towards the tip forming a sympodial denticulate rachis, straight to flexuous. Conidia formed singly, hyaline or pigmented, smooth, sub globose to fusiform, with an apiculate base (adapted from Videira et al. 2016).
Type species: Acrodontium crateriforme (J.F.H. Beyma) de Hoog
Notes: Acrodontium is characterised by conidiogenous cells that produce conidia on a sympodially proliferating rachis, that is straight or slightly flexuous, bearing alternating denticles at regular intervals. Acrodontium is a distinct genus in Teratosphaeriaceae. Molecular markers available for Acrodontium are ITS, LSU, SSU, Actin, Calmodulin, GAPDH, Histone, RPB2 and TEF-1.
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