R. Fraley

Mealy Shadow

Phaeophyscia orbicularis

Mealy Shadow is a soft gray-green foliose lichen recognized by its powdered lobes and shadowed apothecial discs. Mealy Shadow is one of Minnesota’s most widespread bark lichens, often appearing as a quiet, neutral-toned companion beside brighter species such as Candelaria concolor and Xanthoria parietina.

For identification details and comparison with other similar species, see the Phaeophyscia orbicularis in the Field Notes section.

Mealy Shadow Lichen close-up Mealy Shadow Lichen
A matte gray thallus with mealy margins blending into the bark’s coarse texture.
Camera: Canon EOS 5D Mk IV
Lens: EF100mm f/2.8L Macro IS USM
Settings: ISO 200 • Aperture f/9.0 • Shutter 2.5 s
E21A8055 Size: 6720×4480

The colony forms dense, rounded patches of narrow lobes dusted with pale soredia. Dark-centered apothecia, when present, give the species its characteristic “shadowed” appearance.

Candleflame in the Company of Shadows
E21A8057 Candleflame in the Company of Shadows