SafePlants

Pixie Cup Lichen (Cladonia spp.)

Cladonia, commonly called cup lichen or pixie cup lichen, is a fascinating genus of moss-like lichens. These lichens often display distinctive cup-shaped structures.

Please note: As lichens, these plants are a symbiotic relationship between algae and fungus. Information below is for educational purposes only and not intended to treat or diagnose any condition.

Considerations for Children

• Some Cladonia species feature small, cup-like structures, which may be tempting for children to pick or play with.
• The text mentions that Cladonia pyxidata has cups that are approximately 1/2 inch high.

Considerations for Pets

• The text mentions that some species grow on logs or at the base of trees, habitats frequently explored by pets.

Taxonomy and Nomenclature

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

Distribution and Habitat

• Cladonia species are often found growing on moss, logs, rocks, and at the base of trees.
• They can thrive in exposed subalpine sites and are frequently observed in boreal forests.
• Specific locations mentioned include the Eagle Creek Trail in the Columbia River Gorge and the Olympic Peninsula.

Morphological Characteristics and Growth Habits

• Cladonia are moss-like lichens, known for their cup-shaped structures (podetia).
• The podetia can vary in shape, sometimes described as funnel-shaped.
• Some species have upright fruiting stalks.
• Colors range from greenish-grey to light-grey-green.

Ecological Role

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

Quirky Facts

• One description humorously compares the shape of Cladonia to "Shrek's Ears or miniature golf-tees."

Traditional Uses

• Historically, some have boiled Cladonia with milk or syrup as a remedy for whooping cough and chest ailments.