You selected Pyrenula mastoidea Ach. This is a synonym for:

Accepted scientific name:
Porina mastoidea (Ach.) Müll. Arg. (accepted name) 1 literature reference for Porina mastoidea (Ach.) Müll. Arg.
Synonyms:
Pyrenula mastoidea Ach. (synonym) 1 literature reference for Pyrenula mastoidea Ach.
Common names: -
Classification:
Fungi
Phylum Ascomycota
Class Lecanoromycetes
Order Ostropales
Family Porinaceae
Genus Porina
Distribution: Eurasia – Asia-Tropical; Americas – South and Central America; Oceania – Australasia
Additional data: Lichen species with LIASlight ItemID: 4919
Source database: LIAS, Jul 2010
Latest taxonomic scrutiny: Triebel D. & Rambold G., 20-Jul-2010
Online resource: http://liaslight.lias.net/Descriptions/ItemID_4919.html
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:d38337ec-2dc5-11e0-98c6-2ce70255a436:col20110201