| 
 Acarospora nodulosa (=A. reagens)  | 
 Psora saviezii  | 
 Diploschistes diacapsis (=D. steppicus)  | 
| 
 Psora decipiens with Fulgensia desertorum and Acarospora nodulosa  | 
 Psora saviezii with Acarospora nodulosa , Toninia sedifolia and Fulgensia poelti  | 
 Squamarina lentigera  | 
| 
 Verrucaria caerulea  | 
 Squamarina cartilaginea  | 
 Font de l'Ermitage, Fomtromeu, Alta Cerdanya  |