Description: This species is very like the common upland species U. cylindrica (described elsewhere) but differs in the absence of marginal hairs (cilia) and the markedly ridged and icing-sugar coated (pruinose) centre to the thallus. In Ireland, this species is only known from the far south-west and County Wicklow.

Key Identification Features:

• Like U. cylindrica but without marginal cilia; very crumpled and ridged, pruinose
• Point of attachment central, medulla C+ red.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Umbilicaria proboscidea at iNaturalist World Species Observations database.