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Project Noah Nature School
Umbilicaria mammulata
A very large foliose lichen that grows on boulders. Upper surface is pink-brown; lower surface turns black with maturity.
Boulders, rock walls in forests and near water.
I've been told that this is edible, especially when boiled.
Spotted on Apr 19, 2014
Submitted on Apr 28, 2014
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