Yellow wall lichen is easily recognisable, common, and very interesting. It is also called common orange lichen or, more poetically, maritime sunburst lichen.
Lichen is not just a stain on a stone or tree, but a complex, fragile and very interesting companion that quietly tells us about the health of nature. Winter is the perfect time to observe and learn about lichens, Latvian Mycological Society says.
Yellow wall lichen grows on stones, tree bark and man-made sur...