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 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Umbilicariales |
| Family: | Umbilicariaceae |
| Genus: | Umbilicaria |
| Species: | U. americana
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| Binomial name | |
| Umbilicaria americana Poelt & T.H.Nash (1993)
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Description
editUmbilicaria 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
edit- ^ "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).
- ^ Walewski, Joe (2007). Lichens of the North Woods. City: Kollath-Stensaas. ISBN 0-9792006-0-1.
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