Description: Known only from County Carlow, the thallus of this species grows on the old dry bark of ancient trees. It is easily overlooked for Schismatomma decolorans (described elsewhere), but candidates for spot testing can be selected from other crusts on the basis of their white-grey, floury soralia and waxy-textured thallus. This species tests Pd+ rust-red compared with Pd- in Schismatomma decolorans and Pd+ yellow-orange in Schismatomma niveum.

Key Identification Features:

• A species with a waxy thallus bearing scattered white-grey soredia often running along the small cracks in the surface
• Thallus Pd+ rust-red; on dry bark of old veteran trees in parkland or in historic woodlands often in among Schismatomma decolorans.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Enterographa sorediata at iNaturalist World Species Observations database.