SafePlants

*Cladonia* (Cup Lichen)

*Cladonia*, commonly referred to as cup lichen, is a fascinating genus of lichen known for its distinctive cup-shaped structures.

Considerations for Pets

• Several species in this genera feature cup-shaped podetia, which might be of interest to pets.

Considerations for Children

• Some species have podetia described as resembling "miniature golf-tees," which could be appealing to young children.
• The term "pixie dust" is used to describe some species, which may be appealing to children.

Taxonomy and Nomenclature

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

Distribution and Habitat

• *Cladonia* species are often found in boreal forests and exposed subalpine sites.
• They commonly grow on moss, logs, rocks, and at the base of trees.
• Specific locations mentioned include the Olympic Peninsula, Columbia River Gorge (Eagle Creek Trail), and the Pocono Mountains.

Ecological Role

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

Morphological Characteristics

• They are moss-like lichens with cup-shaped fruiting bodies or stalks called podetia.
• Podetia can be funnel-shaped, tapering towards the base.
• Some species have podetia resembling "Shrek's Ears" or miniature golf-tees.
• Some species may have corticate granules.

Quirky Facts

• Some *Cladonia* species are referred to as "pixie cup lichens."
• Historically, some have been boiled with milk or syrup as a remedy for whooping cough and chest ailments.