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cup lichen

Scientific Name: Cladonia subsetacea

Family: Cladoniaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Pixie Cup Lichen (Cladonia spp.)

Cladonia, commonly known as pixie cup lichen or cup lichen, is a fascinating genus of moss-like lichens belonging to the family Cladoniaceae.

Considerations for Pets

  • Some Cladonia species have upright fruiting stalks.
  • The text refers to Cladonia lichens growing on logs or at the base of trees, suggesting they are found in outdoor environments where pets may encounter them.
  • The plant is described as having small, cup-like structures and sometimes corticate granules, which might be tempting for pets to ingest.

Considerations for Children

  • The common name "pixie cup lichen" suggests a whimsical appearance that might attract children's attention.
  • The lichen's small size (e.g., 1/2 inch high cup) means it could be easily picked up by children.

Taxonomy and Nomenclature

  • Scientific Name: Cladonia
  • Family: Cladoniaceae

Distribution and Habitat

  • Cladonia species are boreal lichens, occurring across the boreal forest.
  • They often grow on moss, logs, rock outcrops, or at the base of trees, particularly in areas with poor soils.
  • One species, Cladonia chlorophaea, is common on rotting stumps in wet lowlands on the Olympic Peninsula.

Ecological Role

  • Cladonia species serve as a primary food source for reindeer and caribou.

Morphological Characteristics

  • Cladonia lichens are moss-like in appearance.
  • They feature cup-like structures or fruiting bodies, sometimes described as resembling miniature golf tees (podetia).
  • The "cups" can be funnel-shaped, with a sprinkling of light-grey-green "pixie dust" (likely referring to soredia).
  • Some species, like Cladonia pyxidata, have small cups (around 1/2 inch high).
  • Others, like Cladonia monomorpha, have thallus lobes with narrowly recurved features.
  • Some species have apothecia.

Quirky Facts

  • Some have described the shape of Cladonia podetia as resembling "Shrek's Ears" or miniature golf tees.
  • Historically, when boiled with milk or syrup, some Cladonia species were used as a remedy for whooping cough and chest ailments.
  • They are perfect for cooler spaces.

Interactions with Other Organisms

  • As lichens, Cladonia species are composed of algae and fungus in a symbiotic relationship.
  • They often grow among mosses.
  • Other lichens, such as Cladonia macilenta, can grow in colonies with Cladonia species.