The lichen originally described as Lecidea chlorophaea Hepp ex Leight. (Lich. Fl. Gr. Brit.: 328. 1871) belongs in Diplotomma according to current generic concepts. Szatala (in Ann. Hist.-Nat. Mus. Natl. Hung. 48: 280. 1956) intended to make the combination D. chlorophaeum, but did not cite the place of publication of Leighton’s name and consequently his combination, as such, is not validly published (Art. 41.5, Turland & al. in Regnum Veg. 159. 2018). However, Szatala did include a Latin description, and his name is validly published as the name of a new species. He did not explicitly designate a type (see below), but, at that time, indication of a type was not a requirement for valid publication. The name D. chlorophaeum Szatala has always been used to refer to Leighton’s species.