Lichens : Peltigerales : LobariaceaeLichens

Ricasolia virens (With.) H.H.Blom & Tønsberg

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Ricasolia virens

Description: This ‘lungwort’ lichen is easily identified by its green-grey greasy appearance, almost oily when wet. It is a ‘heavyweight’ amongst the foliose lichens. It possesses no isidia soredia or large black, bubbly outgrowths and has smooth lobes. In the wet, it glows bright green. In south-western Ireland, in the west of County Kerry, this is the commonest of the Lobaria species. It occurs in woodland with a long ecological history, as well as on shaded and often damp rocks near the sea. It is also relatively frequent on isolated wayside trees in suitable areas.

Key Identification Features:

  • The greasy, heavyweight thallus, bright green when wet and lack of isidia, soredia or black knobbly outgrowths will help to identify it
  • Other ‘lungwort’ lichens may occur with it, but none of these appear the slightest bit greasy.

Original text submitted by Simon Davey

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

iNaturalist: Ricasolia virens at iNaturalist World Species Observations database.

 Giavarini, Vince J., Simms, Michael J., & Davey, Simon, 2026. Ricasolia virens. (With.) H.H.Blom & Tønsberg. [In] Lichen Ireland.
https://www.habitas.org.uk/lichenireland/species.php?item=19313. Accessed on 2026-11-12.