Fig. 3From: Ecological and taxonomic characterisation of Trentepohlia umbrina (Kützing) Bornet growing on stone surfaces in Lazio (Italy)Widespread and distribution of BP. a The abundance of the red-orange biofilm in the favourable condition of Grassi hospital. b The differences of colonisation related to the aspects (Santa Severa). c The ecological transition from red-orange BP to black BP (S. Marinella)Back to article page