Pleosporales » Didymellaceae » Didysimulans

Didysimulans italica

Didysimulans italica Tibpromma, Camporesi & K.D. Hyde, in Tibpromma et al., Fungal Diversity 83: 77 (2017)

Index Fungorum number: IF 552771; Facesofungi number: FoF 2885

Etymology: refers to the country where the holotype was collected.

Holotype: MFLU 14-0722

Saprobic on dead stem of Epilobium sp. Sexual morph: Ascomata 149–167 μm high × 165–188 μm diam. (x̄ = 159 × 177 μm, n = 5), immersed, solitary or in small groups, uniloculate, globose, conspicuous at the surface, dull, black, smooth, without hairs, ostiolate. Peridium 27–58 μm wide, thick, comprising 5–6 layers of hyaline to dark brown cells of textura angularis. Hamathecium comprising 2.3–3.3 μm wide, dense, numerous, septate, unbranched, pseudoparaphyses. Asci 32–49 × 9–15 μm (x̄ = 42 × 12 μm, n = 15), 8-spored, bitunicate, fissitunicate, cylindric, short pedicellate, thick-walled. Ascospores 9–14 × 3–5 μm (x̄ = 11 × 4 μm, n = 20), overlapping 1–2-seriate, 2-celled, hyaline, oval or obclavate, 1-septate, slightly constricted at the septum, enlarged at first cell, conical at the ends, lacking a mucilaginous sheath. Asexual morph Undetermined.

            Culture characteristics: Colonies on MEA reaching 4 cm diam., after 7 days in the dark at 16 ° C, rhizoid colony with undulate, smooth, raised on surface, white.

Material examined: ITALY, Galeata Province, Passo delle Forche, on dead stem of Epilobium sp. (Onagraceae),16 June 2014, Erio Camporesi, IT1936 (MFLU 14-0722, holotype); ex-type living culture MFLUCC 15-0059 (HKAS 94595 bis, paratype).

GenBank Numbers: LSU:KY496730, ITS:KY496750, SSU:KY501118, RPB2:KY514408.

Notes: Didysimulans italica is introduced as a new species with distinct ascospores which are conical at the ends. Although D. italica is closely related to D. mezzanensis (type species), they can be distinguished by morphology. Ascomata and ascospore characters are different (Tibpromma et al. 2017).