Basionym Name:Tichothecium erraticum A. Massal., Symmict. Lich.: 94 (1855)
Homotypic synonyms:Endococcus erraticus (A. Massal.) Nyl., Lich. Scand. (Helsinki): 283 (1861)Endococcus erraticus subsp. erraticus (A. Massal.) Nyl., Lich. Scand. (Helsinki): 283 (1861)Muellerella erratica (A. Massal.) Hafellner & Volk. John, Herzogia 19: 165 (2006)Mycoporum erraticum (A. Massal.) Jatta, Syll. Lich. Ital. (Trano): 495 (1900)Sychnogonia erratica (A. Massal.) Trevis., Conspect. Verruc.: 18 (1860)Tichothecium pygmaeum var. erraticum (A. Massal.) Bagl., Nuovo G. bot. ital. 11(1): 122 (1879)Verrucaria erratica (A. Massal.) Leight., Lich.-Fl. Great Brit.: 465 (1871)