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

Umbilicaria americana
Umbilicaria americana growing on rock faces
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Umbilicariales
Family: Umbilicariaceae
Genus: Umbilicaria
Species:
U. americana
Binomial name
Umbilicaria americana
Poelt & T.H.Nash (1993)

Description

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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

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  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.