Parmotrema pontagrossense (Eliasaro & Adler) Blanco, Crespo, Divakar, Elix & Lumbsch, 2005
Parmotrema pontagrossense is distinguished by the sorediate thallus with cespitose cilia and by presents a complex chemistry, with salazinic acid, lichexanthone (see comments under P. ultralucens) and the lichesterinic and protolichesterinic acids in the medulla.
The branching pattern of the cilia was already well described in the protologue (Eliasaro & Adler 1998). The same pattern can be seen in Parmotrema spinibarbe, a close species with the same overall morphology, but that can be differentiated by the formation of soredia from botryose structures as well as by the absence of lichesterinic and protolichesterinic acids. Future collections of fertile material perhaps will provide additional differences between these two species.
[Spielmann 2009]