Asci 30-45 x 8-10 μm, spores globose, almost uniseriately arranged, 3.5-6 x 3.5-5 μm, axial body ca. 4 μm, maximum tholus thickness ca. 2 μm; paraphyses 40-60 x 1-1.5 μm; cortical tissue beneath pycnidium present, conidia bacillariform (sic), sharpened in one or both ends, ca. 8-10 x 1.0-1.3 μm.  Tuckermannopsis inermis was earlier only known from a rather limited range in the Bering region (Kiirnefelt 1979) but it has recently been found in several new localities in eastern Siberia (Zhurbenko, pers. comm.).