Tag Archives: Caloplaca thallincola

Wall lichen, yellow wall lichen, common yellow wall-lichen, common yellow wall-moss, yellow crotal, maritime starburst lichen – there are not many lichen species that can boast to have six common names. Needless to say, the English names for the species have yet to be standardised, but they do capture the ubiquitous, eye-catching and saxicolous characterContinue reading “Xanthoria parietina’s golden shields”