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Image of Umbilicaria americana Poelt & T. H. Nash
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Umbilicaria americana Poelt & T. H. Nash

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Umbilicaria americana

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Umbilicaria americana, commonly known as frosted rock tripe, is a foliose lichen of rock faces.

Description

Umbilicaria americana has been described as looking like "grayish-white potato chips."[1] The upper surface is gray with the appearance of white dusting. The lower surface is black. The lobes are 2 to 7 cm in diameter.[2]

References

  1. ^ "Rocky Mountain National Park- Umbilicaria americana (U.S. National Park Service)." Jul 14, 2007.http://www.nps.gov/romo/umbilicaria_americana.htm (accessed Dec 17, 2008).
  2. ^ Walewski, Joe (2007). Lichens of the North Woods. City: Kollath-Stensaas. ISBN 0-9792006-0-1.
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Umbilicaria americana: Brief Summary

provided by wikipedia EN

Umbilicaria americana, commonly known as frosted rock tripe, is a foliose lichen of rock faces.

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