Protothelenella anodonta (Nyl.) Hafellner

Syn.: Mycoglaena lichenoides (Rehm ex Sacc.) Riedl, Mycowinteria anodonta (Nyl.) Sherwood & Boise, Odontotrema anodontum Nyl., Protothelenella lichenoides (Rehm ex Sacc.) comb. inval., Trematosphaeria lichenoides Rehm (1875, nom. nud.), Winteria lichenoides (Rehm ex Sacc.) Sacc., Zignoella lichenoides Rehm ex Sacc. (1878)
Non- or doubtfully lichenised.
Substrate: lignum
Altitudinal distribution: subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a doubtfully lichenised species with perithecioid ascomata to 0.6 mm in diam. with a greenish-black ascomatal wall and distinct and numerous interascal filaments, fissitunicate asci with an amyloid apical apparatus in the endoascus, initially 8-spored, but when mature often with reduced spore numbers (4, 6), and hyaline, oblong ascospores (14-18 × 6-8 µm) with a tapering lower end, with 3-5 transversal septa and 1 incomplete longitudinal septum; on bleached wood of coniferous trees; known from Fennoscandia and Central Europe, with a few records from the Eastern Alps (Austria, Italy).
Austria: Tirol; Italy: Trentino Alto Adige;