![](http://www.alamy.com/thumbs/6/FCA730BB-B874-4FBF-A646-C8107D2B9394/CNT3BF.jpg)
lichen (Lecanora muralis), growing on roof tiles
Size: 5315px × 3543px
Photo credit: © blickwinkel/Hecker / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., building, buildings, detail, details, format, grey, growing, hecker, horizontal, lichen, lichens, plant, plants, roof, roofing, roofs, symbiosis, tile, tiles