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Project Noah Nature School
Umbilicaria rigida
Broad lobes of Umbilicaria rigida grow outward from a central area of attachment (umbilicus) on exposed alpine rock. The rough upper surface is black to brownish-black with white-ridged wrinkles.
Exposed alpine rocks.
Brouseau Mountain
Spotted on Oct 11, 2013
Submitted on Oct 13, 2013
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