SafePlants

Pixie Cup Lichen and Other Cladonia Species

Lichens of the Cladonia genus, often referred to as cup lichens, are fascinating organisms with diverse forms and ecological roles. They're not actually a single plant but a symbiotic partnership between algae and fungi.

Considerations for Pets

• Some Cladonia species have cup-like structures. While generally small, these structures might present a minor curiosity to pets.

Considerations for Children

• The small, cup-like structures of some Cladonia species might be tempting for young children to pick or handle.

Scientific Classification

• Genus: Cladonia (commonly referred to as cup lichen)
• Family: Cladoniaceae
• Example Species: Cladonia asahinae (commonly known as the pixie cup lichen), Cladonia pyxidata (pyxie cup lichen), Cladonia coccifera (Elf Cup Lichen), Cladonia cristatella (British Soldier Lichen), Cladonia fimbriata (Fringed cup lichen), Cladonia chlorophaea (False Pixie Cup), Cladonia bellidiflora, Cladonia pocillum, Cladonia macilenta, Cladonia monomorpha, Cladonia borealis, Cladonia pityrea

Distribution and Habitat

• Cladonia species are found in various environments, including boreal forests and subalpine sites.
• They often grow on moss, logs, rocks, and poor soils.

Morphological Characteristics

• Cladonia lichens exhibit diverse forms, with some species featuring cup-like structures called podetia.
• These podetia can be funnel-shaped or have upright fruiting stalks.
• Some species have thallus lobes and may be covered in granules.

Ecological Role

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

Quirky Facts

• The appearance of some Cladonia species has been compared to "Shrek's Ears" or miniature golf tees.
• Historically, some have been boiled with milk or syrup as a remedy for whooping cough and chest ailments.