RF2B1759R–Crustose lichens on a tree trunk in the Daintree Rain Forest in Queensland, Australia. Crustose lichens are common on trees in tropical ecoregions.
RF2BE52YH–Closeup of round pebbles covered with Crustose lichen colonies on raised beach, Isle of Colonsay, Scotland, UK
RMAX53PH–Terracotta tiles with crustose lichen colonies
RM2BDX5GC–Lichens on a rock
RMCYX42X–Crustose Lichen. (Lecanora sp. ). Stone Wall. Iona, Inner Hebrides, west coast of Scotland.
RMR1GPNK–Yellow crustose lichen growing on concrete background
RMB8C048–Fleabane crustose Lichen Rocks
RMC0WCKF–Crustose lichens on a rock in the Mojave Desert, California.
RFB096RF–Crustose Lichen, Oberthauern, Salzburg, Austria
RMCFFKD8–Crustose, corticolous lichen, Pertusaria albescens on branch. Exmoor.
RMCXX717–A small fir grows near a rock covered with crustose and foliose lichens in the St. Lawrence seashore of Essipit in Quebec
RMC5ARE2–A crustose lichen, probably Caloplaca species, Valgrisenche, Italian Alps.
RFC40MTF–Mosaic of crustose lichens with clearly delineated black boundaries giving the appearance of a map at Fyfield Down Wiltshire
RM2JR4T34–Crustose lichen (Lecanora campestris), grow on a wall, Germany
RM2DF6Y7D–Verrucaria lecideoides is a crustose lichen with black perithecia.
RMP3H0G5–Moorland Lichen including Crustose Lichens Rhizocarpon oederi, Pertusaria corallina
RFC85NEM–Orange crustose lichen (Caloplaca elegans) growing on a rock surrounded by crowberry plants on the shore of Hudson Bay
RMJAM37R–Lichens on rock (Epilithic crustose lichen) - Arizona, USA