Catapyrenium cinereum (Pers.) Körb.  
Family: Verrucariaceae
[Dermatocarpon cinereum (Pers.) Th. Fr., moreDermatocarpon cinereum var. cinereum (Pers.) Th. Fr., Dermatocarpon cinereum var. fuscescens Vězda, Dermatocarpon hepaticum (Ach.) Th.Fr., Dermatocarpon hepaticum var. hepaticum (Ach.) Th. Fr., Endocarpon cinereum Pers., Endocarpon cinereum var. cartilagineum Nyl., Endocarpon cinereum var. cinereum Pers., Endocarpon hepaticum Ach., Endopyrenium cinereum (Pers.) Oxner, Endopyrenium hepaticum (Ach.) Körb., Endopyrenium hepaticum f. hepaticum (Ach.) Körb., Involucrocarpon cinereum (Pers.) Servít, Lichen hepaticus (Ach.) Lam., Placidium cinereum (Pers.) Szatala, Placidium hepaticum (Ach.) Arnold, Placidium hepaticum f. hepaticum (Ach.) Arnold, Placidium hepaticum var. hepaticum (Ach.) Arnold]
Catapyrenium cinereum image
Samuel Brinker
  • American Arctic Lichens
  • Resources
Thompson, J., 1984. American Arctic Lichens: The Macrolichens.
Thallus adnate squamulose, chinky between the squamules in the center, gray-brown, ashy brown, ashy gray with whitish gray pruina when young, this disappearing; the squamules 0.2-1.5 mm long, 0.2-0.4 mm broad, the margins entire, over a black hypothallus; upper cortex 30-50 µ of paraplectenchymatous cells with 3-8 µ diameter. Perithecia immersed in the thallus, the summit forming 0.2 mm-broad warts; perithecium brown to black; periphyses numerous; paraphyses gelatinizing, the gelatin 1+ pale violet, at the base of the perithecium blue; asci cylindrico-clavate; spores 8, biseriate, simple hyaline, ellipsoid, 16-23x6-7 µ.

This species grows on soil or humus, especially in calcareous habitats. It is circumpolar, arctic-alpine, and boreal, ranging into New England, the North Central states, and California.

Catapyrenium cinereum
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Samuel Brinker
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Lucy Taylor
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Sheila Strawn
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Christopher M. Maves
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