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degelia lichen

Scientific Name: Degelia plumbea

Family: Pannariaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Degelia Lichens

This page provides information about lichens belonging to the genus Degelia, focusing on species such as Degelia cyanoloma, Degelia atlantica, and Degelia plumbea.

Considerations for Pets

  • The thallus of some Degelia species can become strongly wrinkled when dry.

Considerations for Children

  • The thallus of some Degelia species can become strongly wrinkled when dry.

Scientific Name and Common Names

  • Scientific Name: Degelia Arv. &amp D. J. Galloway
  • Common Name: Degelia Lichen

Taxonomy and Nomenclature

  • Family: Pannariaceae
  • Rank: Genus
  • Species: Includes Degelia cyanoloma, Degelia atlantica, and Degelia plumbea
  • Synonyms for Degelia cyanoloma:
    • Degelia plumbea auct. p.p.
    • Parmeliella plumbea auct. p.p.
    • Pectenia cyanoloma
  • Alternative Scientific Name for Degelia plumbea: Degelia plumbea (Lightf.) P.M. Jrg. &amp P. James

Distribution and Habitat

  • Degelia species are found in various locations, including:
    • Central Spain (threatened genus of epiphytic lichen species)
    • Nova Scotia (northerly limit of distribution for Degelia plumbea)
    • Markland, Avalon Peninsula
    • Burren National Park
    • Outer Hebrides
  • Degelia plumbea is the only Degelia species found in North America.

Morphological Characteristics

  • Thallus:
    • Foliose (leafy) body type
    • Blue-grey to lead grey, sometimes paler brownish grey when dry, dark blue when wet
    • Marked with longitudinal marks and striations
    • Lobes that are concentrically undulate-ridged
    • Large, up to 10cm in diameter
    • Has crescent-shaped rings on the marginal lobes
    • Jelly-like when wet, shrinking and becoming strongly wrinkled when dry

Interactions with Other Organisms

  • Degelia lichens contain a photobiont (a photosynthetic partner, often cyanobacteria).
  • Associated with old-forest environments.
  • Found on trees.

Further Information

  • The British Lichen Society: Promoting the Study, Enjoyment, and Conservation of Lichens.
  • APHOTOFUNGI - Photographic Stock Library Page for Degelia atlantica.
  • Lichen Gallery of Leif &amp Anita Stridvall - Degelia plumbea.
  • ResearchGate.