Myriangiales » Elsinoaceae

Molleriella

Molleriella G. Winter, Bolm Soc. broteriana, Coimbra, sér. 1 4: 199 (1886).

 Index Fungorum number: IF 522278; Facesoffungi number: FoF 07375, 6 morphological species (Species Fungorum 2022), no molecular data available.

Saprobic on lower leaf surface. Sexual morph: Pseudoascostromata solitary, aggregated or gregarious, pulvinate, superficial, globose to oval, pale yellow, multi-loculate, locules scattered in upper part of pseudoascostromata. Cells of pseudoascostromata comprising host cells and interdispersed light colored fungal hyphae opening by unordered break down of the surface layer. Locules with 4–10 asci inside each locule, ostiolate. Ostiole minute. Paraphyses absent. Asci 8-spored, bitunicate, fissitunicate, globose to subglobose, thick-walled, with a minute pedicel and an ocular chamber. Ascospores irregularly arranged, oblong to sub-clavate, 6–8-septate, hyaline. Asexual morph: Unknown (adapted from Jayawardene et al. 2014).

Type species: Molleriella mirabilis G. Winter

Notes: Molleriella was placed in Phymatophaeriaceae by Engler et al. (1897) and Hieronymus and Hennings (1901). The taxonomic placement of Molleriella has undergone many changes in previous years. Molleriella was referred to the family Saccardiaceae by Boedijn (1961) while Arnaud (1918) and Bessy (1950) placed Molleriella in Myriangiaceae. Kirk et al. (2001) placed Molleriella in the family Elsinoaceae and this was followed by Lumbsch and Huhndorf (2007, 2010). Molleriella resembles Elsinoe in having multi-loculate, pulvinate scab-like blemish pseudoascostromata, lacking paraphyses, and minute ostioles, plus globose asci with indistinct ocular chambers. Molleriella differs from Elsinoe in having a saprotrophic lifestyle and in having globose to subglobose sessile asci. Jayawardene et al. (2014) retained Molleriella in the family Elsinoaceae. Sequence data is needed to confirm the correct placement of the genus.

 

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