SafePlants

Cladonia (Cup Lichen)

Cladonia, commonly known as cup lichen or pixie cup lichen, is a genus of moss-like lichens belonging to the family Cladoniaceae. They are a fascinating example of a symbiotic relationship between algae and fungus.

Considerations for Pets

• Cladonia lichens can have upright fruiting stalks.

Considerations for Children

• Some Cladonia species form small cup-like structures, like tiny cups (around 1/2 inch high).

Taxonomy and Nomenclature

• Scientific Name: Cladonia
• Common Names: Cup lichen, Pixie cup lichen
• Family: Cladoniaceae

Distribution and Habitat

• Cladonia species are found in various environments, including boreal forests and exposed subalpine sites.
• They often grow on moss, rotting wood, acidic soil, fallen logs, or humus covering tree bases.
• Examples include locations along the Eagle Creek Trail, Columbia River, and the Olympic Peninsula.

Ecological Role

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

Morphological Characteristics

• Cladonia lichens are often described as moss-like.
• They can form cup-shaped structures (podetia) that resemble "Shrek's Ears" or miniature golf tees.
• Some species, like Cladonia pyxidata, have small cup-like structures.
• Podetia can be funnel-shaped, tapering towards the base.
• Some species have upright fruiting stalks and greenish-grey color.

Interactions with Other Organisms

• Cladonia lichens form a symbiotic relationship between algae and fungus.

Quirky Facts

• Some people compare the cup-shaped structures (podetia) of *Cladonia* to "Shrek's Ears" or miniature golf tees.

Specific Species Examples:

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