powdered ruffle lichen

Also known as Powdered Loop Lichen, Ruffled Shield Lichen

Powdered ruffle lichen spreads pale grey-green, papery lobes across hardwood bark and sunlit branches throughout humid temperate forests. Delicate dark cilia fringe its ruffled margins, while fine flour-like soredia cluster along the edges to drive vegetative reproduction. A bright white underside fading to dark brown near the center helps distinguish it from look-alike shield lichens.