Description: This crustose epiphyte will be instantly recognised by its numerous, small, cream or ivory-white discs (0.2-0.7mm diam.) scattered across a pale-green-white thallus. It is a lichen of the wettest and most nutrient-poor, hyperoceanic woodlands where it enters into association with other Micarea species, Mycoblastus sanguinarius, Megalaria pulverea and larger foliose lichens such as Hypotrachyna laevigata. Thinly scattered; largely absent from eastern and central Ireland.

Key Identification Features:

• Small, cream or ivory-white discs on a pale-green thallus
• On oak, alder, birch and other acid-barked trees in western hyperoceanic areas of Ireland.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Micarea alabastrites at iNaturalist World Species Observations database.