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orange lichen

Scientific Name: Caloplaca pelodella

Family: Teloschistaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Xanthoria parietina: Common Orange Lichen

Xanthoria parietina, commonly known as common orange lichen, yellow scale, or maritime sunburst lichen, is a foliose (leafy) lichen species recognized for its vibrant color and widespread distribution.

Considerations for Pets

  • This lichen can be found growing on rocks, concrete, and trees, potentially within reach of pets outdoors.

Considerations for Children

  • This lichen can be found growing on rocks, concrete, and trees, potentially within reach of children outdoors.
  • Historically, pigments from colorful lichens, including orange varieties like Xanthoria parietina, have been used to dye wool and other fibers.

Taxonomy and Nomenclature

  • Scientific Name: Xanthoria parietina
  • Common Names: Common orange lichen, yellow scale, maritime sunburst lichen, orange lichen, orange wall lichen, sunburst lichen, golden shield lichen, shore lichen.
  • Family: Teloschistaceae

Distribution and Habitat

  • Xanthoria parietina has a wide distribution.
  • It is commonly found on rocks, concrete, and trees.
  • It can be prolific in coastal areas and near cattle farms due to its preference for ammonia-rich environments.
  • Observed in locations such as the Western Isles, New Zealand coastal rocks and Humboldt Lagoons State Park, California.

Morphological Characteristics

  • Foliose (leafy) lichen forming large, rounded patches up to 10 cm across.
  • Has wide, round-lipped marginal lobes.
  • The thallus is typically yellowish-green to orange, but can appear grey in shaded conditions.
  • Lacks isidia or soredia.
  • Apothecia (fruiting bodies) are usually present and have a dark orange disc surrounded by a lighter edge.

Quirky Facts

  • The vibrant orange color of Xanthoria parietina is due to the production of the pigment parietin.
  • Orange lichens can sometimes be found identifying hunting perches for birds.

Ecological Role

  • The presence of this lichen may indicate alkaline bark conditions.

Interactions with Other Organisms

  • Lichens, including Xanthoria parietina, are a symbiotic association between a fungus and an alga. The alga resides within the hyphae of the fungus.
  • This lichen can grow in profusion in seabird colonies.

Potential Uses

  • Parietin, the orange pigment found in Xanthoria parietina, is being studied for its potential anti-cancer properties.