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cup lichen

Scientific Name: Cladonia gracilis ssp. vulnerata

Family: Cladoniaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Pixie Cup Lichen (Cladonia spp.)

Cladonia, commonly known as pixie cup lichen, is a fascinating genus of moss-like lichens belonging to the family Cladoniaceae. Often described as looking like "Shrek's ears" or miniature golf tees, these lichens add a touch of whimsy to the environments they inhabit.

Considerations for Pets

  • Some Cladonia species can be found in terrariums.

Considerations for Children

  • The name "pixie cup" and their small, cup-like shape might be attractive to children.

Taxonomy and Nomenclature

  • Scientific Name: Cladonia spp.
  • Common Name(s): Cup lichen, Pixie cup lichen
  • Family: Cladoniaceae

Distribution and Habitat

  • Cladonia species are found in various habitats, including the forest floor, typically on logs or at the base of trees.
  • They are known to thrive in exposed subalpine sites and grow on poor soils and fallen logs.
  • Specific locations mentioned include the Olympic Peninsula (for Cladonia chlorophaea) and rock outcrops along the Eagle Creek Trail in the Columbia River Gorge.
  • They are commonly found across the boreal forest.

Morphological Characteristics and Growth Habits

  • Cladonia lichens exhibit upright fruiting stalks.
  • They are moss-like in appearance.
  • Their podetia (stalks) can be funnel-shaped, tapering gradually towards the base.
  • The exterior of the podetia can be variably clothed with corticate granules and sometimes soredia.
  • The cup-like structures are typically small, around 1/2 inch high.
  • Some species, like Cladonia chlorophaea, have erect, hollow cup-like growths with unbranched, round-toothed, and curled cups.

Ecological Role

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

Quirky Facts

  • They can resemble miniature golf tees and are sometimes described as looking like Shrek's ears.
  • One historical use involves boiling the lichen with milk or syrup as a remedy for whooping cough and chest ailments.

Interactions with Other Organisms

  • They form symbiotic relationships between algae and fungus.
  • Cladonia species grow on moss, particularly Chorisodontium.
  • They can cohabitate with other lichen species like Cladonia macilenta.

Specific Species Mentioned

  • Cladonia asahinae
  • Cladonia pyxidata (pyxie cup lichen)
  • Cladonia borealis
  • Cladonia fimbriata (fringed cup lichen)
  • Cladonia coccifera (Elf Cup Lichen)
  • Cladonia pocillum
  • Cladonia monomorpha
  • Cladonia cristatella (British Soldier Lichen)
  • Cladonia pityrea (Pityrea Lichen)
  • Cladonia chlorophaea
  • Cladonia bellidiflora