Parmotrema subcaperatum (Kremp.) Hale, 1974
Diagnostic description:
Parmotrema subcaperatum is distinguished by the absence of vegetative propagules, medulla with salazinic (K+ yellow → red) and the dark brown lower surface. The similar P. recipiendum presents just norlobaridone and loxodin (medulla K–, KC+ reddish) while P. reparatum (Stirton) Blanco, Crespo, Divakar, Elix & Lumbsch has a distinct black lower surface (Kurokawa 2001).
[Spielmann & Marcelli 2009]