on the same tree with several other lichen species.
Brown lower surface
on trees, the most common lichen I saw todpale green, dark lower surface with rhizines
On rock in full sun, light pale green, soredia. Lower surface: brown edges with dark rhizines
Flavoparmelia caperata or common greenshield lichen (from Lichens of North America) is a medium to large foliose lichen that has a very distinctive pale yellow green upper cortex when dry. The rounded lobes, measuring 3–8 mm (0.1–0.3 in) wide, usually have patches of granular soredia arising from pustules. The lobes of the thallus may be smooth, but quite often have a wrinkled appearance especially in older specimens. The lower surface is black except for a brown margin; rhizomes...