(Huds.) DC.
Identity
Unique IDELEMENT_GLOBAL.2.123378
Element CodeNLLEC40360
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryFungus
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomFungi
PhylumAscomycota
ClassLecanoromycetes
OrderPeltigerales
FamilyCollemataceae
GenusCollema
Other Common NamesBlistered Tarpaper Lichen (EN) Collème noirâtre (FR)
Concept ReferenceEsslinger, T.L. and R.S. Egan. 1995. A sixth checklist of the lichen-forming, lichenicolous, and allied fungi of the continental United States and Canada. The Bryologist 98(4): 467-549.
Conservation Status
Review Date2006-06-30
Change Date2002-12-23
Edition Date2002-11-30
Edition AuthorsDaphne Stone
Threat ImpactLow
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsA widespread species that occurs on five continents. Not as susceptible to air pollution as twig-growing lichens.
Range Extent CommentsCollema nigrescens is found throughout much of the world: the West Coast and eastern North America, Central America, Europe, North Africa, Asia and Australia (Dey 1978). Rare in the Appalachian Mountains (Dey 1978).
Threat Impact CommentsCutting or other destruction of oak trees could damage populations quickly. Lives on boles, so not as exposed to pollution as twig spp. Collema furfuraceum, a closely related species, is sensitive to air pollution. Extinct in Estonia (per Estonian Red list on web) but reason not clear.