Chrysothrix candelaris

It does not show ascocarps or other reproductive structures, belonging to the group commonly known as the 'Fungi or lichens imperfecti' in the UK.

[3][4] This lichen is widespread and common in the United Kingdom, where it occurs on the bark of deciduous trees, especially rugged old specimens, such as sycamore, alder, oak, willow, beech, and pine species,[5] normally in dry shaded parts.

[6] It is found in North America, Scotland,[6] Hungary,[7] Iran,[8] Latvia[9] and has been recorded in the Cape Verde Islands.

[11] Because its thallus is made entirely of powdery soredia that covers the substrate like a crust, Chrysothrix candelaris is a leprose lichen.

[12] Lacking apothecia, soredia and isidia, C. candelaris is not able to reproduce by spores, but spreads by its thallus becoming distributed by the wind, the feet of animals, etc.