[3] James Mascall Morrison Crombie mentioned the species in an 1877 publication in which he revised and added his own notes about the lichens collected by Stirton.

[5] José María Egea Fernández and Pilar Torrente transferred the taxon to Lecanographa in 1994, when they circumscribed that new genus as a result of their studies on the family Opegraphaceae.

[2] They also proposed that the taxon named Opegrapha huneckii by Gerhard Follmann and Oscar Klement in 1970, collected from Canary Islands,[6] is the same species as Lecanographa dialeuca.

Although it differs slightly in some characteristics from the description given by Egea and Torrente, Graciela Paz-Bermúdez considered the two specimens to represent the same species.

The Galician specimen was found on a sheltered granitic rock overhang, growing with other lichens such as Dirina massiliensis, Lecanographa grumulosa, Roccella phycopsis, Sclerophyton circumscriptum, and species of Opegrapha.