Description: This species has recently (2010) become segregated from P. reticulatum (described elsewhere) on the basis of the following characteristics (i) the lobes have a broad zone close to the edge which lacks rhizines, (ii) has a thicker thallus with a generally thickened margin, (iii) does not have thin upright lobes capped with soralia. Little is known of the relative distribution of the two species in Ireland. In Scotland, P. pseudoreticulatum has proved to be the commoner.

Key Identification Features:

• Lobes with broad marginal zone lacking rhizines
• Thallus thicker, with thicker margin.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Parmotrema pseudoreticulatum at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Parmotrema pseudoreticulatum at iNaturalist World Species Observations database.