Description: Considered virtually identical to H. prevostii (described elsewhere) which has Trentepohlia as its algal partner, that is, the thallus scratches orange not green. The yellow-pinkish thallus is developed over moist calcareous rocks. There may be more than one species involved as spore sizes vary significantly among British populations, those from Scotland having smaller, rounder spores. In Ireland: Counties Galway, Sligo and Londonderry.

Key Identification Features:

• Like H. prevostii but scratching orange, that is, Trentepohlia partner
• Damp limestone often on rock fragments or scree.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Hymenelia epulotica at iNaturalist World Species Observations database.