Vermiculariopsiellales » Acrodictyaceae


Acrodictys M.B. Ellis, Mycol. Pap. 79: 5 (1961)

Sordariomycetes families incertae sedis, Acrodictyaceae, Acrodictys

Index Fungorum number: IF 7034; 25 morphological species (Species Fungorum 2020); 10 species with sequence data (Luo et al. 2019)


Saprobic on woody substrates. Asexual morph: Colonies on host efuse, superficial, velvety or hairy, black. Mycelium usually immersed, comprises pale brown, septate, branched, smooth hyphae. Conidiophores macronematous, mononematous, generally indeterminate, erect, straight or flexuous, often with a bulbous base, thick-walled, smooth, proliferating percurrently. Conidiogenous cells monoblastic, integrated, terminal. Conidia acrogenous, solitary, obovoid to pyriform, pale or mid brown at the base to dark blackish brown toward the apex,  muriform, with transverse septa generally spanning the whole width of conidia, longitudinal septa short and incomplete, with a narrowly truncate base, smooth, with schizolytic secession. Sexual morph: Undetermined (adapted from Xia et al. 2017).


Type species: Acrodictys bambusicola M.B. Ellis, Mycol. Pap. 79: 6 (1961)



Notes: Ellis (1961) introduced Acrodictys, typified by A. bambusicola. Baker et al. (2002) reviewed the status of Acrodictys and refined the generic concept in a stricter sense. Based on the narrower concept, some species were excluded from Acrodictys and transferred to new genera, for example, Junewangia, Rhexoacrodictys, Pseudoacrodictys and Ramoacrodictys (Baker et al. 2002, Baker & Morgan-Jones 2003, Zhao et al. 2009). Seifert et al. (2011) provided a taxonomic key to Acrodictys and similar genera.


Species illustrated in this entry:

Acrodictys aquatica (N.G. Liu & K.D. Hyde) Z.L. Luo & K.D. Hyde




Baker WA, Morgan-Jones G. 2003 – Notes on Hyphomycetes. XCI. Pseudoacrodictys, a novel genus for seven taxa formerly placed in Acrodictys. Mycotaxon 85, 371–391

Baker WA, Partridge EC, Morgan-Jones G. 2002 – Notes on hyphomycetes. LXXXV. Junewangia, a genus in which to classify four Acrodictys species and a new taxon. Mycotaxon 81, 293–319

Ellis MB. 1961 – Dematiaceous hyphomycetes. II. Mycological Papers 79, 1–23

Seifert KA, Gams W. 2011 –The genera of Hyphomycetes – 2011 update. Persoonia 27, 119–129

Xia JW, Ma YR, Li Z, Zhang XG. 2017 – Acrodictys-like wood decay fungi from southern China, with two new families Acrodictyaceae and Junewangiaceae. Scientific Reports 7, 7888

Zhao GZ, Tian YH, Liu XZ. 2009 – Ramoacrodictys, a new hyphomycete genus for one species previously accommodated in Acrodictys. Sydowia 61, 353–359


About Sordariomycetes

The webpage Sordariomycetes provides an up-to-date classification and account of all genera of the class Sordariomycetes.


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