Dothideomycetes » Dothideomycetes, genera incertae sedis

Maireella

Maireella Syd. ex Maire, Annls mycol. 6(2): 145 (1908).

 Index Fungorum number: IF 2981 ; Facesoffungi number: FoF 12278, 7 morphological species (Species Fungorum 2022), no molecular data available.

Parasitic on leaves of Asteraceae. Sexual morph: Ascomata dark brown to black, superficial, solitary or gregarious, globose to subglobose or pyriform, unilocular, glabrous, ostiolate. Ostiole papillate, centrally located. Peridium composed of dark brown to brown cells of textura angularis. Hamathecium composed of dense filamentous, hyaline to pale brown, septate, branched, anastomosing pseudoparaphyses. Asci 2–8-spored, bitunicate, saccate, cylindrical to fusiform, broadly rounded above, narrow below, pedicellate. Ascospores yellowish to dark brown, 1–2-seriate, uniseptate, constricted at the septum, symmetric or asymmetric, smooth and thick-walled. Asexual morph: Unknown (adapted from Li et al. 2014).

 

Type species: Maireella maculans Syd. ex Maire

 

Notes: Maireella species are characterised by globose to pyriform, papillate ascomata, bitunicate, oblong to clavate asci and ellipsoidal, hyaline to olive-brown, 2-celled, asymmetric ascospores. Li et al. (2014) placed Maireella in Venturiaceae. Molecular data is needed to confirm this placement.

 

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