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Rose's orange lichen

Scientific Name: Caloplaca rosei

Family: Teloschistaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Lichens: A World of Colors and Ecological Indicators

Lichens are fascinating organisms, often overlooked but playing a vital role in various ecosystems. They are not single organisms but rather a symbiotic partnership between a fungus and an alga, or sometimes a cyanobacterium.

Considerations for Pets

  • Lichens can grow on rocks, trees, and other surfaces in gardens and natural areas.

Considerations for Children

  • Lichens come in a variety of colors, including orange, yellow, gray, and green, and may be appealing to children.

Common Names

  • Orange Lichen
  • Rose's Orange Lichen

Taxonomy and Nomenclature

  • Several species of lichens are mentioned:
    • Caloplaca adnexa
    • Caloplaca ahtii
    • Caloplaca rosei
    • Caloplaca alcarum
    • Xanthoria parietina

Distribution and Habitat

  • Lichens are found in diverse environments, including the Western Isles, woodlands, Mount Rose (a boreal forest), and even churchyards.
  • They grow on rocks, trees, the ground, and various other surfaces.

Ecological Role

  • Lichens are natural indicators of air pollution. The presence or absence of certain lichen species can reflect air quality.
  • The New Index of Ecological Continuity Rose (NIEC) is mentioned as a measure used in ecological studies.

Morphological Characteristics

  • Lichens exhibit various growth forms:
    • Crustaceous (forming a crust)
    • Foliose (leaf-like)
    • Fruticose (shrub-like)
  • Colors range from green, gray, yellow, and orange to pink, brown, and wine-colored.

Interactions with Other Organisms

  • Lichens form symbiotic relationships with algae.
  • They can be found growing on trees alongside moss and algae.

Quirky Facts

  • In medieval times, the orange-yellow lichen Xanthoria was used for uterine troubles.
  • Lichens can be used to create dyes, with pink, brown, or wine-colored dyes produced from certain species. Yellow or orange dye can also be made from the bark of the sassafras tree.

Further Information

  • Hawksworth, D.L. &amp Rose, F. (1977) Lichen communities in the British Isles: a reader's digest of lichen ecology.
  • The herbarium of F. Rose is mentioned.
  • Lichen Flora of the Greater Sonoran Desert Region.