SafePlants

Cracked Lichens

The term "cracked lichen" refers to various lichen species characterized by a distinctive cracked or cobblestone-like appearance of their thallus (body). They are often found growing on rocks and other surfaces, contributing to the breakdown of these materials over time.

Considerations for Pets

• The text mentions lichens growing on rocks. Outdoor access to such rocks may present a risk of accidental ingestion, though the text does not explicitly state that these lichens are toxic.

Considerations for Children

• Cracked lichens may have a texture resembling cracked paint or cobblestones, which could be appealing to touch or pick at. The text does not explicitly state that these lichens are toxic if ingested.

Scientific Classification and Nomenclature

• Scientific Name: The text references several species within the genus Acarospora, including Acarospora hilaris, Acarospora schleicheri, Acarospora gallica, Acarospora aeruginosa, Acarospora arenosa, Acarospora impressula, Acarospora nodulosa, Acarospora socialis and Acarospora badiofusca.
• Common Names: Cracked lichen, cobblestone lichen
• Family: Acarosporaceae
• Kingdom: Fungi

Distribution and Habitat

• Some cracked lichen species, such as narcotic lichen, are rare and found in desolate parts of the Rockies.
• Cracked lichens can be found growing on granite and sandstone cliffs.

Morphological Characteristics and Growth Habits

• The thallus can appear "cracked-areolate" due to cracks forming during growth.
• The lichen thallus is initially made up of separate lumps that may grow together to form a continuous, cracked surface.
• Some species, like Buellia subalbula, have a white, cracked thallus.

Ecological Role

• Lichens contribute to the breakdown of rocks through slow erosion.

Quirky Facts

• The text alludes to "narcotic lichen" and a potential "sheep-based drug cartel", although this is presented humorously and should not be taken as factual information about the lichen's properties.