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eggyolk lichen

Scientific Name: Candelariella

Family: Candelariaceae

Category: Lichen

Growth:

Duration:

Other Names:

       

Eggyolk Lichen (Candelariella)

Candelariella, commonly known as eggyolk lichen, goldspeck lichen, or yolk lichen, is a genus of crustose or squamulose lichens belonging to the Lecanoraceae family.

Considerations for Pets

  • Lichens may grow on various surfaces, including tree bark and rocks, which pets might encounter outdoors.

Taxonomy and Nomenclature

  • Scientific Name: Candelariella
  • Common Names: Eggyolk Lichen, Goldspeck Lichen, Yolk Lichen
  • Family: Lecanoraceae (and sometimes Candelariaceae)
  • Rank: Genus
  • Examples of species mentioned include:
    • Candelariella aurella (Hidden goldspeck lichen, eggyolk lichen)
    • Candelariella arctica (Arctic Eggyolk Lichen)
    • Candelariella athallina (Eggyolk Lichen)
    • Candelariella vitellina (Synonym: Common Goldspeck Lichen)
    • Candelariella spraguei (Sprague's Eggyolk Lichen)
    • Candelariella terrigena
    • Candelariella dispersa (Dispersed eggyolk lichen)
    • Candelariella xanthostigma
    • Candelariella rosulans
    • Candelariella reflexa

Distribution and Habitat

  • Candelariella aurella is commonly found on calcareous surfaces.
  • Candelariella vitellina is a common lichen in Michigan, growing on rock, bark, or old wood.

Ecological Role

  • Candelariella vitellina has a moderate pollution tolerance and indicates mediocre air quality.
  • Some species thrive under bird colonies due to the nitrogen they provide.

Quirky Facts

  • A colony of some species of Eggyolk Lichen takes 100 years to reach the diameter of a fried egg yolk.
  • Under black light, a bone-white lichen may appear a startling egg-yolk yellow.