Thallus verrucae dispersed, solitary, to 0.2 mm. tall and 0.14-0.16 mm wide, apices foveolate, upper part pale sulfur yellow-becoming green, in lower part +/- becoming dark green. Apothecia single in verrucae, globose, with wide ostiole. Paraphyses very thin, but always developed. Asci numerous, varied, cylindrical, clavate or narrowly saccate, 120-180 X 17-30 µ. Spores very numerous in asci (200-300), hyaline, simple, oval or ellipsoid, (5.7)-7-8 X 3.8-4.7 µ. Hymenium iodine not becoming blue. Gonidia cystococcus.
On humus above decaying mosses and lichens.
In vicinity of Tiksi Bay. On tundra.
Th. Tichomirovii very closely resembles Th. impressulo Nyl., but the color of thallus verrucae, ascus shape, and hymenial reaction with iodine differ.