SafePlants

Cladonia (Cup Lichen)

Cladonia, commonly referred to as cup lichen or pixie cup lichen, is a fascinating genus of moss-like lichens. These lichens often exhibit distinctive cup-shaped structures, adding to their visual appeal.

Considerations for Pets

• This lichen grows on moss, particularly Chorisodontium, suggesting a potential presence in environments accessible to pets.
• Some Cladonia species have upright fruiting stalks.

Considerations for Children

• The cup-like structures of some Cladonia species are small (e.g., 1/2 inch high), and can look like miniature cups.

Taxonomy and Nomenclature

• Scientific Name: Cladonia
• Common Names: Cup lichen, Pixie cup lichen
• Family: Cladoniaceae
• Kingdom: Not specified in provided text.
• Taxonomic Rank: Genus
• Cladonia asahinae, Cladonia pyxidata, Cladonia chlorophaea, Cladonia coccifera, Cladonia fimbriata, Cladonia borealis, Cladonia bellidiflora, Cladonia gracilis, Cladonia cristatella, Cladonia pityrea, Cladonia macilenta and Cladonia monomorpha are some of the species mentioned.

Distribution and Habitat

• Cladonia species are found in a variety of environments, including forests and open areas.
• They often grow on moss, rotting wood, acidic soil, fallen logs, and at the base of trees.
• Specific locations mentioned include the Olympic Peninsula (for Cladonia chlorophaea), the Columbia River (Eagle Creek Trail), and subalpine sites.

Morphological Characteristics and Growth Habits

• Cladonia species exhibit diverse forms, including cup-shaped podetia, upright fruiting stalks, and thallus lobes.
• The cup-like structures can be funnel-shaped and may be covered in corticate granules or soredia.
• They can be greenish-grey in color.

Ecological Role

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

Quirky Facts

• The shape of Cladonia pods has been compared to Shrek's ears or miniature golf tees.