Common greenshield lichen

Flavoparmelia caperata

''Flavoparmelia caperata'' or common greenshield lichen 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 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 attached to the lower surface are black and unbranched.

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