An epiphytic taxon from the P. saxatilis aggregate that has been described relatively recently based on a tiny morphological differences and DNA. Its identification is problematic. According to some studies focused on the group around P. saxatilis, it is a typical cryptic species, reliably distinguishable from P. ernstiae only by the DNA (see for example Corsie et al. 2019). However, the well-developed specimens may be relatively securely identified by the colour, shape and location of isidia, the shape of pseudocyphelia, the shiny surface and the wide, round lobes. Parmelia serrana is widespread in Europe, growing mainly on bark of deciduous trees and rarely also on wood and rocks. Unfortunately, its ecological requirements and distribution in the Czech Republic are insufficiently known so far. Most of the reports come from mountain deciduous forests, where it often grows on rather thick branches of deciduous trees (typically beech).
Literature: Corsie E., Harrold P. & Yahr R. (2019): No combination of morphological, ecological or chemical characters can reliably diagnose species in the Parmelia saxatilis aggregate in Scotland. – Lichenologist 51: 107–121.taxonomic classification:
All records: 26, confirmed 25. One click on a selected square displays particular record(s), including their source(s).