Polycauliona verruculifera 2

Licence: 
Creative Commons Licence
Description: 

Polycauliona (Caloplaca) verruculifera, thallus on basalt rock, Isle of Muck, Scotland.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith