This is a species of moist mossy bark. The luxuriantly feathered squamules on a yellow-green thallus give the impression of clusters of isidia which spread onto bark mosses, where it can resemble forms of Micarea micrococca or Porina rosei which proffer similar bundles. The discs are keg-shaped, becoming flatter with maturity. It is known only from Killarney, County Kerry.

Key characteristics

• Thallus pale straw-green of dissected squamules appearing to be like clusters of isidia
• Discs barrel-like at first; on moist mossy bark.

Original text submitted by Vince J. Giavarini