Description: The thinly areolate thallus of this species is not dissimilar to that of Buellia griseovirens (described elsewhere) but is more patch-forming, spreading among other lichens and over mosses and liverworts. The grey to green-white soralia are usually abundant K+ faint y, Pd-. The flecking of grey soralia over a darker thallus helps to identify it; R. efflorescens can resemble it but is Pd+ red. The discs are very rare.

Key Identification Features:

• An uncommon grey, sorediate species of mossy bark; most areoles produce grey to greenish-white soredia
• Spot tests Pd-, K+ faint yellow.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Rinodina griseosoralifera at iNaturalist World Species Observations database.