Notes: In this study we found that T. trachosa not only from the type locality (Scotland) but also from New Zealand, with the probability of being distributed in cold temperate locations. Thelonectria trachosa is closely related to species in the T. discophora and T. lucida complexes; however, they have morphological differences, such as the structure of perithecial wall. Thelonectria trachosa also produces microconidia and 1–4-septate macroconidia usually smaller than in the related species. It is also the only species to produce pure white colonies, and to have an extremely slow growth rate at temperatures higher than 20 °C, with no growth at temperatures higher than 25 °C.