Basionym Name:Verrucaria xylina Nyl., Act. Soc. linn. Bordeaux 21(4): 437 (1857)
Homotypic synonyms:Porina xylina (Nyl.) Zahlbr., Cat. Lich. Univers. 1: 410 (1922)Spermatodium xylinum (Nyl.) Trevis., Conspect. Verruc.: 11 (1860)