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Flavoparmelia carperata
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; rhizines attached to the lower surface are black and unbranched.
Woodland close to lake.
Spotted on Mar 7, 2012
Submitted on Mar 8, 2012
4 Comments
Thanks Arlanda!
Foliose sure.
Maybe Common Green Shield, flavoparmelia carperata
You may be right Seema - I was thinking crustose purely because of the circular growth habit but maybe I should just call it lichen!
I wonder whether its crustose or foliose?