Lichens : Caliciales : PhysciaceaeLichens

Physcia tenella (Scop.) DC. [31]

Physcia-tenella-fertile-2-mjs.jpg
Physcia tenella

Description: This small, grey, foliose lichen will be among the first species the beginner will find on nutrient-rich twigs and branches. The loosely attached plants often grow abundantly in scattered patches. The slightly raised, white-dotted lobes terminate in open clusters of soralia (coarse granular powder that is a mixture of fungal hyphae and algae). White, whiskery cilia grow along the margins. The lobe ends are never swollen or hood-shaped. Fruiting discs are uncommon.

Key Identification Features:

  • Very small, grey and foliose with the thallus minutely white-dotted
  • Lobes with ends covered in a low mound of white, granular soredia (never inflated or hood-shaped).

Original text submitted by Vince J. Giavarini

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

iNaturalist: Physcia tenella at iNaturalist World Species Observations database.

 Giavarini, Vince J., Simms, Michael J., & Davey, Simon, 2026. Physcia tenella. (Scop.) DC. [31]. [In] Lichen Ireland.
https://www.habitas.org.uk/lichenireland/species.php?item=18934. Accessed on 2026-11-12.