Description: This large, but rather untidy, foliose species is one of only four ‘lungwort lichens’ endemic to Ireland. What makes it so very different from the other three is the pale, yellow-green colour of the thallus changing to blue-grey when wet. The broad, rounded lobes are much wrinkled with blue-grey granules (soredia) surfacing along the tops of the ridges and around the edges. Discs are rare. It grows together with other Lobaria species on tree boles and branches in Ireland’s least disturbed areas. It is frequent only in the oceanic woodlands of the south-west. Rare in east Ireland.

Key Identification Features:

• ‘Lungwort lichen’, scruffy appearance, yellow-green when dry, grey-blue when wet, with soredia on the ridges of the lobes
• Lobes to 10cm or more, rarely with discs.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Lobarina scrobiculata at iNaturalist World Species Observations database.