Lichen are everywhere; on city walls, on rock faces and covering branches of ancient trees. Made up of an alga and a fungus living in symbiosis, lichen are often intricate and mesmerising to behold in woodland.
Usnic acid, one of the…
Lichen are everywhere; on city walls, on rock faces and covering branches of ancient trees. Made up of an alga and a fungus living in symbiosis, lichen are often intricate and mesmerising to behold in woodland.
Usnic acid, one of the…