Evernia mesomorpha

Evernia mesomorpha
Secure
Secure (NatureServe)
Scientific classification Edit this classification
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Evernia
Species:
E. mesomorpha
Binomial name
Evernia mesomorpha
Nyl. (1861)

Evernia mesomorpha, commonly known as boreal oakmoss, is a species of fruticose lichen belonging to the family Parmeliaceae. It is characterized by a shrubby, yellow-green thallus with angular branches and coarse soredia on the ridges.

Habitat and range

Evernia mesomorpha grows on the bark of shrubs and trees. It has a cosmopolitan distribution.

Chemistry

Evernia mesomorpha contains usnic acid and divaricatic acid.

Species interactions

Evernia mesomorpha is a host for the lichenicolous fungus Tremella everniae.

References

  1. ↑ NatureServe. "Evernia mesomorpha". NatureServe Explorer. Arlington, Virginia. Retrieved 12 September 2025.
  2. 1 2 "Evernia mesomorpha Nyl". www.gbif.org. Retrieved 11 February 2021.
  3. 1 2 3 4 Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Canadian Museum of Nature. New Haven: Yale University Press. pp. 311–312. ISBN 978-0-300-08249-4.
  4. ↑ Diederich, Paul; Millanes, Ana M.; Wedin, Mats; Lawrey, James D. (2022), Flora of lichenicolous fungi. Volume 1: Basidiomycota, Luxembourg: National Museum of Natural History, p. 171, ISBN 978-2-919877-26-3, retrieved 2026-10-14