Opeg dolo4400c.jpg

Licence: 
Creative Commons Licence
Description: 

Opegrapha dolomitica, specimen on Carboniferous Limestone, VC 65, N.W. Yorkshire.

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