V. adnata V. atlantica V. californica V. globigera V. hookerioides V. isidioidea V. labrata V. leucophaea V. saubinetii Vahliella is a genus of nine species of lichen-forming fungi in the order Peltigerales.

Vahliella species somewhat resemble those of the genus Fuscopannaria – in which they were originally classified – but are distinguished from them by the layered apical amyloid sheets of the asci, the lack of lichen substances, and the absence of an epispore.

[2] In its Latin circumscription, Vahliellaceae is defined by its differences from the Pannariaceae: the absence of lichen substances, a poorly developed thalline margin, and the amyloid apical layers.

The hymenium is hemiamyloid (meaning it takes on a purplish-grey colour when treated with Melzer's reagent), and contains unbranched, septate paraphyses that have pigmented tips.

Vahliella is a mainly saxicolous (rock-inhabiting) genus that has adapted to rather extreme habitats on maritime coasts (two species) and arctic-alpine or desert conditions.