Testudina
Testudina Bizz., Atti Inst. Veneto Sci. lett., ed Arti, Sér. 6 3: 303 (1885).
Index Fungorum number: IF 5381; Facesoffungi number: FoF 08373, 1 morphological species (Species Fungorum 2022), no molecular data available.
Saprobic or parasitic on coniferous twigs. Sexual morph: Ascomata superficial, scattered, or gregarious, globose, sphaerical or tuberous, not easily removed from the substrate, usually containing host particles, wall dark, carbonaceous. Peridium composed of thick-walled, brown cells in radiating rows. Hamathecium comprising septate, hyaline, pseudoparaphyses. Asci 8-spored, bitunicate, obovate, broadly clavate or sphaerical, rounded at the apex with a short pedicel. Ascospores uniseriate, brown, 1-septate, slighltly constricted at the septum, composed of rounded cells, wall reticulate. Asexual morph: Unknown (adapted from Hyde et al. 2013).
Type species: Testudina terrestris Bizz.
Notes: Testudina is characterised by superficial ascomata, clavate, ovoid or saccate, apedicellate asci and brown, oblong or ovoid, occasionally reniform ascospores. The asexual morph is characterised by elongate, dark brown pycnidia often with long stalks, and hyaline, 1-celled conidia. Höhnel (1917) treated Testudina in Cephalothecaceae. Malloch and Cain (1971) transferred Testudina to Pseudeurotiaceae. Von Arx (1971) assigned Testudina to Testudinaceae based on its dark-walled ascomata and bitunicate asci withuniseptate dark ascospores (Hyde et al. 2013). Molecular data is lacking for the genus hence the taxonomic placement of Testudina is doubtful. Fresh collections are required to confirm the placement of Testudina.
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