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Cladonia: The Cup Lichen

Cladonia, commonly called cup lichen or pixie cup lichen, is a fascinating genus of moss-like lichens belonging to the family Cladoniaceae. These lichens are known for their distinctive cup-shaped structures and play a significant role in various ecosystems.

Considerations for Pets

• Some Cladonia species have upright fruiting stalks.
• They may be found growing on logs or at the base of trees.

Considerations for Children

• Some Cladonia species are shaped like miniature golf-tees.
• They may be found growing on the forest floor.

Taxonomy and Nomenclature

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

Distribution and Habitat

• Cladonia species are boreal lichens, commonly found across the boreal forest.
• They thrive in exposed subalpine sites, growing on poor soils and fallen logs.
• Specific locations mentioned include the Olympic Peninsula and the Columbia River (Eagle Creek Trail).

Ecological Role

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

Morphological Characteristics

• Cladonia lichens are moss-like in appearance.
• They are characterized by cup-shaped fruiting bodies or stalks (podetia).
• The podetia can be funnel-shaped, tapering towards the base.
• Some species exhibit upright fruiting stalks.
• Structures can be described as having a cortex extending up to cup bases, sometimes with abundant, farinose soredia.
• The pixie cup is small, approximately 1/2 inch high.
• Variations exist such as the "red pixie cup" with red apothecia.

Quirky Facts

• Some say Cladonia lichens look like Shrek's ears or miniature golf tees.
• Lichens like these Pixie Cups are perfect for cooler spaces. Just add a unicorn figurine to make some magic happen.