Minutisphaerales

Acrogenosporaceae

Acrogenosporaceae Jayasiri & K.D. Hyde, Mycosphere 9(4): 809 (2018)

Index Fungorum number: IF 554451; Facesoffungi number: FoF 04575; 13 species.

 

Saprobic on bark and wood. Sexual morph: Hysterothecia superficial, laterally compressed, thick-walled, with a prominent sunken slit, solitary to gregarious, erect and elevated, presenting an almost pedicellate appearance. Hamathecium comprising persistent cellular, hypha-like, hyaline, septate, paraphyses. Asci 8-spored, cylindrical to clavate. Ascospores 1–2-seriate, ellipsoidal to fusiform, hyaline or moderately pigmented, 1- or 2-celled, with the septum near the lower end, hyaline or moderately pigmented. Asexual morph: Hyphomycetous. Colonies effuse, scattered, black, glistening, hairy. Mycelium mostly immersed, consisting of septate, subhyaline to pale brown hyphae. Conidiophores macronematous, mononematous, pale to mid brown, often slightly paler at the apex, smooth, septate, unbranched, long cylindrical or slightly tapering towards the apex, straight or slightly flexuous, erect, solitary or in small groups. Conidiogenous cells monoblastic, integrated, terminal or intercalary, light brown or hyaline, cylindrical, often elongated percurrently. Conidia holoblastic, solitary, globose, obovoid to ellipsoidal, asaptate, dark brown to black,

smooth or verrucose, truncate at base. (Description from Hongsanan et al. 2020)

 

Type genus: Acrogenospora M.B. Ellis.

 

Notes: Acrogenosporaceae was introduced by Jayasiri et al. (2018) for a single genus Acrogenospora. Based on morphological characters and phylogenetic analyses, Acrogenosporaceae was placed within Minutisphaerales as a sister clade to the type family Minutisphaeraceae (Jayasiri et al. 2018). This study further supports the earlier result (Fig. 46). Descriptions and illustrations of the sexual morphs of Acrogenosporaceae can be seen in previous studies (i.e. Greville 1825; Duby 1862; von Arx and Müller 1975). (Notes from Hongsanan et al. 2020)

 

References

Duby JE (1862) Mémoire sur la tribu des Hystérinées de la famille des Hypoxylées (Pyrénomycètes). Mem Soc Phys Hist Nat Geneve 16:15–70

Greville RK (1825) Scottish Cryptogamic Flora, or coloured figures and descriptions of cryptogamic plants, belonging chiefly to the order Fungi. Vol IV. Edinburgh: MacLachlan & Stewart; London: Baldwin, Cradock & Joy

Hongsanan S, Hyde KD, Phookamsak R, et al (2020) Refined families of Dothideomycetes: orders and families incertae sedis in Dothideomycetes. Fungal Divers 105:17–318. https://doi.org/10.1007/s13225-020-00462-6

Jayasiri SC, Hyde KD, Jones EBG, Peršoh D, Camporesi E, Kang JC (2018) Taxonomic novelties of hysteriform Dothideomycetes. Mycosphere 9:803–837

von Arx JA, Müller E (1975) A re-evaluation of the bitunicate Ascomycetes with keys to families and genera. Stud Mycol 9:1–159

 

Recent Genus

1
Neochlamydotubeufia
Neohelicomyces

Recent Species

Neohelicomyces submersus
Neohelicomyces hyalosporus
Neohelicomyces grandisporus