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orange lichen

Scientific Name: Caloplaca quercicola

Family: Teloschistaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Xanthoria parietina: Common Orange Lichen

Xanthoria parietina, a vibrant and widely distributed lichen, is commonly known as common orange lichen, yellow scale, maritime sunburst lichen, or simply orange lichen. Its striking color and prevalence make it a familiar sight in various environments.

Taxonomy and Nomenclature

  • Scientific Name: Xanthoria parietina
  • Common Names: Common orange lichen, yellow scale, maritime sunburst lichen, orange lichen, sunburst lichen, golden shield lichen, shore lichen.
  • Family: Teloschistaceae
  • Xanthoria is a genus of lichenized fungi.

Distribution and Habitat

Xanthoria parietina has a wide distribution and is found in various locations, including:

  • Rocks
  • Concrete
  • Trees
  • Near cattle farms (favors ammonia)
  • Coastal rocks (New Zealand)
  • Tombstones
  • Humboldt Lagoons State Park, California
  • Western Isles
  • Desert environments

Morphological Characteristics

  • Foliose (leafy) lichen
  • Forms large, rounded patches up to 10 cm across
  • Wide, round-lipped marginal lobes
  • Thallus color ranges from yellowish-green to orange, and grey in shade
  • Lacks isidia or soredia
  • Apothecia usually present
  • Starts as a small yellow or orange dot and gradually grows outward

Ecological Role

  • May identify hunting perches of birds.
  • Grows in profusion in seabird areas.

Interactions with Other Organisms

  • A symbiotic association between a fungus and an alga. The alga is contained within the hyphae.

Quirky Facts

  • The orange color of Xanthoria parietina is due to the production of the pigment parietin.
  • Pigments can be extracted by boiling and used to dye wool and other fibers.
  • The elegant sunburst lichen, Xanthoria elegans, is highly tolerant of hunting perches of birds.