J.C.Wei & Ahti (2002)
(A.Evans) J.C.Wei & Ahti (2002)
Cetradonia is a lichen genus in the family Cladoniaceae. A monotypic genus, Cetradonia contains the single species Cetradonia linearis (formerly known as Cladonia linearis and as Gymnoderma lineare). The genus was circumscribed in 2002.
Cetradonia linearis, commonly known as the rock gnome lichen, is a squamulose lichen found in the higher elevations of the southern Appalachians. Populations are only known to exist in Georgia, North Carolina, South Carolina and Tennessee. The lichen occurs only in frequent fog, or in deep river gorges. Because of its specialized habitat requirements and heavy collection for scientific purposes, the lichen has been listed as an endangered species since January 18, 1995. It is only one of two lichens on the endangered species list, the other being the Florida perforate cladonia.
- "Synonymy: Cetradonia linearis (A. Evans) J.C. Wei & Ahti". Species Fungorum. CAB International. Retrieved 2015-07-02.
- Wei CZ, Ahti T. (2002). "Cetradonia, a new genus in the new family Cetradoniaceae (Lecanorales, Ascomycota)". The Lichenologist 34 (1): 19–31. doi:10.1006/lich.2001.0354.
- USFWS. Rock Gnome Lichen. Asheville Field Office.
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- Cetradonia in Index Fungorum
- Photograph of Rock gnome lichen
- USFWS. Rock Gnome Lichen Recovery Plan. September 1997.
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