SafePlants

Rimmed Lichen: A Diverse Group of Symbiotic Organisms

The term "rimmed lichen" refers not to a single species, but rather to various lichens characterized by a distinct rim-like structure on their thallus (lichen body). Several species across different genera are known by this common name, highlighting a shared morphological trait.

Considerations for Pets

• Wirework cloches are sometimes used to protect plants from animals such as deer, rabbits, squirrels and birds.

Nomenclature and Taxonomy

• The provided text mentions several species referred to as "rimmed lichen," including:
  • Aspicilia reptans (Rimmed Lichen)
  • Aspicilia calcarea (Calcareous Rimmed Lichen)
  • Aspicilia annulata (Rimmed Lichen)
• Other scientific names associated with "rimmed lichen" include:
  • Lecanora reptans (synonym for Aspicilia reptans)
  • Lecanora ryrkaipiae (synonym for Aspicilia reptans)
• Family: Hymeneliaceae (for Aspicilia species) and Lecanoraceae (for Rhizoplaca)
• The text also references the family Megasporaceae.

Distribution and Habitat

• Calcareous Rimmed Lichen (Aspicilia calcarea) is found on limestone rock.
• Aspicilia reptans has been observed outside of Idaho.
• Rimmed Lichen (Asphodelus albus) can be found in the Pyrenees and Western France.
• Plants of Sagehen Creek Basin, CA - Lichens calcareous rimmed lichen.
• Olonne-sur-Mer, Vendee, Pays de la Loire, France.

Morphological Characteristics

• Rimmed lichens are characterized by a rim-like structure surrounding their apothecia (fruiting bodies).
• Rhizoplaca species are commonly called "rimmed navel lichens."

Interactions with Other Organisms

• Lichens are symbiotic organisms, typically formed through a relationship between a fungus and algae (green or blue-green).

Resources and Further Information

• MO, ToL, BHL, WikiSpecies are mentioned as sources for further information.
• Lichen Flora of the Greater Sonoran Desert Region.
• Wisconsin's Natural Heritage Working List.