Vahliella
''Vahliella'' is a genus of nine species of lichen-forming fungi in the order Peltigerales. It is the only member of Vahliellaceae, a family (biology), family circumscription (taxonomy), circumscribed in 2010 to contain this genus. ''Vahliella'' was formerly placed in the family Pannariaceae until molecular phylogenetics showed that it did not belong there. ''Vahliella'' species are found in the Northern Hemisphere – mainly in North America, but also in Europe and India. ''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 (mycology), amyloid sheets of the ascus, asci, the lack of lichen product, lichen substances, and the absence of an epispore. Taxonomy ''Vahliella'' was circumscription (taxonomy), circumscribed by Norwegian botanist Per Magnus Jørgensen in 2008. It was created to contain species formerly placed in the subgenus ''Micropannar ...
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