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Wednesday, November 16, 2011


I believe this variety of lichen is called Hooded Bone, named for its hood-shaped lobe tips.

"Many species [of lichen] are sensitive to air pollution to differing degrees and have been employed successfully to monitor levels of air pollution, especially sulphur dioxide." source: Plants of Northern British Columbia, MacKinnon, Pojar, Coupe, published by Lone Pine Publishing