The genus Scutula was circumscribed by French botanist Louis René Étienne Tulasne in 1862.

[7] Before this, Scutula was applied to a diverse set of unrelated lichenicolous fungi featuring hyaline spores with a single septum and sessile apothecia.

[8] Once classified in the family Micareaceae, molecular phylogenetic analysis showed Scutula to be nested within the Ramalinaceae, closely related to the genus Toninia.

[9] This familial placement has been accepted in recent large-scale updates of fungal classifications.

Asci have a fuzzy amyloid (in Lugol's iodine solution after pre-treatment with KOH) axial tube structure of the ‘Scutula’-type.