Species: Cetrelia cetrarioides
Giant Shield Lichen
Species
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Encyclopedia of Puget Sound
Classification
Kingdom
Fungi
Phylum
Ascomycota
Class
Ascomycetes
Order
Lecanorales
Family
Parmeliaceae
Genus
Cetrelia
NatureServe
Classification
Informal Taxonomy
Fungi/Lichens - Lichens
Formal Taxonomy
Fungi - Ascomycota - Ascomycetes - Lecanorales - Parmeliaceae - Cetrelia - Stable: Best reference W. Culberson and C. Culberson. 1968. The lichen genera Cetrelia and Platismatia (Parmeliaceae). Contributions of the United States National Herbarium 34:449-558.
Ecology and Life History
Short General Description
Lichen; thallus foliose, medium sized to large (generally 5-20 cm diameter); lobes broad (7-15 mm), rounded; upper surface whitish gray to greenish gray; lower surface black with brown margin; rhizines black, simple, sparse; pseudocyphellae present as small white spots present on both upper and lower surfaces; soredia present, in elongate marginal soralia (McCune and Geiser 1997).
Conservation Status
NatureServe Global Status Rank
G4G5
Global Status Last Reviewed
2006-06-30
Global Status Last Changed
2002-12-20
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=S4&CA.QC=SNR&US.AK=SNR&US.NC=S2&US.OR=S3&US.WA=S3" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
Known from Eurasia from the Iberian Peninsula (Barbero et al 1995) to China and the Russian Far East (Guseva et al 1993), and from North America. In North America, reported from coastal Alaska to Oregon, mainly in the Coast Ranges, not known east of the Cascades in the western United States, but rarely so in British Columbia (McCune and Geiser 1997). In the eastern U.S., the species is known from the Appalachian Mountains in NC (10 collections) and from WV. It has also been collected in Mexico.