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Smooth Rock Tripe - Umbilicaria mammulata Large, brown foliose lichen with a black lower surface. It turns green when it gets wet. They ranged in size from about 1 - 9 cm in size. U. mammulata is one of the largest lichens in the world. The thallus can be up to 15cm in diameter.<br />
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Habitat: Rock in a mixed forest Geotagged,Smooth Rock Tripe,Spring,Umbilicaria,Umbilicaria mammulata,United States,foliose lichen,lichen Click/tap to enlarge

Smooth Rock Tripe - Umbilicaria mammulata

Large, brown foliose lichen with a black lower surface. It turns green when it gets wet. They ranged in size from about 1 - 9 cm in size. U. mammulata is one of the largest lichens in the world. The thallus can be up to 15cm in diameter.

Habitat: Rock in a mixed forest

    comments (2)

  1. Whoah! It changes to green from brown when wet? :O Posted 8 months ago
    1. Yup! Posted 8 months ago

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''Umbilicaria mammulata'', or Smooth Rock Tripe, is a foliose lichen found on boulders and rock walls.

Similar species: Umbilicariales
Species identified by Christine Young
View Christine Young's profile

By Christine Young

All rights reserved
Uploaded Dec 29, 2020. Captured Jun 6, 2020 23:32 in 94 CT-37, New Fairfield, CT 06812, USA.
  • Canon EOS 90D
  • f/4.0
  • 1/197s
  • ISO320
  • 100mm