Species characterized by the saccate-revolute, eciliate lobes, the lack of vegetative propagules, the marginal ciliate lobules, very sparse rhizines and the presence of protocetraric acid.
Species well characterized but just only known from the type specimen collected in 1880 in Portugal.
Taxon just known from one specimen collected in northern Portugal in 1880 by Isaac Newton and primarily identified as Parmelia saccatiloba by W. Nylander. This specimen is stored in PO herbarium (University of Porto, Portugal).
Another very interesting species for the European flora (Buellia carballaliana) also comes from the same locality and it is only known from the type material.
Population Trend: Uncertain
Species just collected from a granitic rock
Paz-Bermúdez, G. & Elix, J.A. (2004). A new species of Parmotrema (Ascomycota: Parmeliaceae) from Portugal. Mycotaxon 89(2): 505-508.