Parmotrema commensuratum (Hale) Hale, 1974
Diagnostic description:
Parmotrema commensuratum is characterized by the soralia submarginal and in the lacinules apices and the presence of norlobaridone (medulla K–, KC+ rose → reddish). Parmotrema simulans (Hale) Hale has just caperatic acid (negative reactions) and P. clavuliferum presents salazinic acid (medulla K+ yellow → blood red).
[Spielmann & Marcelli 2009]