variospora (caloplaca) aurantia and verrucaria nigrescens lichens, malta, mediterranean

background art aurantia black backdrop lichen abstract biology beautiful close up closeup crust encrusting ascomycetes colour color garrigue design europe nigrescens fungi variospora caloplaca verrucaria nature yellow soil rock pattern symbiosis surface buskett malta maltese islands mediterranean cloudy day afternoon above view side top one two outdoors outside no nobody horizontal