Breuss, O. 2016. Involucropyrenium romeanum is the correct name for I. squamulosum (lichenised Ascomycota, Verrucariaceae). — Herzogia 29: 196–197.
The new combination Involucropyrenium romeanum (de Lesd.) Breuss is introduced for the pyrenocarpous lichen previously known as Verrucaria squamulosa or Involucropyrenium squamulosum, respectively.