Diaporthomycetidae families incertae sedis

Barbatosphaeriaceae

Barbatosphaeriaceae H. Zhang, K.D. Hyde & Maharachch.

 

Index Fungorum number: IF553763; Facesoffungi number: FoF03341; 26 species.

 

Saprobic on decaying wood or other plant materials. Sexual morph: Ascomata astromatic, leathery to fragile, dark brown to black, solitary or usually aggregated in circular to oval nests or in short rows, globose to subglobose, glabrous or roughened, with elongate necks, venter or neck are sparsely covered with a pubescence that disappears with age. Necks cylindrical, central or lateral, straight to slightly flexuous, when in circular groups decumbent to perpendicular, covering, piercing the periderm in a group. Ostiole periphysate. Peridium two-layered. Paraphyses abundant, persistent, cylindrical, unbranched, septate, constricted at the septa, tapering to the apex. Asci 8-spored, unitunicate, clavate or cylindrical, tapering towards the pedicel, with a distinct or indistinct, refractive, J-, apical ring, floating freely in centrum at maturity. Ascospores 1- or 2-seriate, hyaline to pale brown, oblong to ellipsoid, subcylindrical, reniform, straight, sometimes curved, allantoid, U- to horseshoe-shaped or 3/4 circular, aseptate or septate, not- or slightly constricted at the septum, smooth-walled. Asexual morph: Hyphomycetous, ramichloridium- and sporothrix-like. Conidiophores semi-micronematous to macronematous, unbranched or branched, cylindrical to flask- or irregularly-shaped, brown or hyaline. Conidiogenous cells polyblastic, integrated, terminal, sympodially elongating with several denticles or forming rachis producing conidia holoblastically. Conidia ellipsoidal to suballantoid, straight or curved, unicellular, hyaline (adapted from Réblová 2007, Réblová et al. 2015, Zhang et al. 2017).

Type genus: Barbatosphaeria Réblová

 

Notes: Barbatosphaeriaceae was introduced by Zhang et al. (2017) with three genera, Barbatosphaeria, Ceratostomella and Xylomelasma, in Diaporthomycetidae genera incertae sedis. The family formed a strongly supported, distinct clade, with a stem age of ca 110 MYA in the MCC tree (Hyde et al. 2017, Zhang et al. 2017). Barbatosphaeriaceae formed a sister clade to Natantiella ligneola and Ophiostomatales in Zhang et al. (2017), while it was a sister group to Amplistromatales, Ophiostomatales and Phomatosporales in Senanayake et al. (2016).

 

Genera included in Barbatosphaeriaceae
Barbatosphaeria Réblová
Ceratostomella Sacc.
Xylomelasma Réblová

 

References

Hyde KD, Maharachchikumbura SSN, Hongsanan S, Samarakoon MC et al. 2017a – The ranking of fungi: a tribute to David L. Hawksworth on his 70th birthday. Fungal Diversity 84, 1–23.

Réblová M, Seifert KA. 2007 – A new fungal genus, Teracosphaeria, with a phialophora-like anamorph (Sordariomycetes, Ascomycota). Mycological Research 111, 287–298.

Réblová M, Réblová K, Stepanek V. 2015c – Molecular systematics of Barbatosphaeria (Sordariomycetes): multigene phylogeny and secondary ITS structure. Persoonia 35, 21–38.

Senanayake IC, Al-Sadi AM, Bhat JD, Camporesi E et al. 2016 – Phomatosporales ord. nov and Phomatosporaceae fam. nov., to accommodate Lanspora, Phomatospora and Tenuimurus, gen. nov. Mycosphere 7, 628–641.

Zhang H, Dong W, Hyde KD, Maharachchikumbura SSN et al. 2017a – Towards a natural classification of Annulatascaceae-like taxa: introducing Atractosporales ord. nov. and six new families. Fungal Diversity 85, 75–110.

 

Recent Genus

1
Neochlamydotubeufia
Neohelicomyces

Recent Species

Neohelicomyces submersus
Neohelicomyces hyalosporus
Neohelicomyces grandisporus