Rock Tripe:
on Sharp Top Mountain

By William T. Hathaway
Rock Tripe (Umbilicaria mammulata)

Although the Toad Lichen is also present, the Rock Tripe is a more plentiful lichen on the higher elevations of Sharp Top at the Peaks of Otter. It has a smooth upper surface compared to the warty-looking surface of the Toad Lichen.

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