SafePlants

Cracked Lichens (Genus Acarospora)

Cracked lichens, often resembling cobblestone roads or cracked paint, belong to the genus Acarospora within the family Acarosporaceae. The common name "cracked lichen" refers to the cracked-areolate appearance of their thallus (lichen body), which can develop as separate lumps grow together.

Considerations for Pets

• The text mentions "sheep-based drug cartel" in reference to Narcotic lichen which may be a consideration if the lichen is ingested.

Considerations for Children

• Some lichens may have a surface that cracks and bleeds, this may require attention after contact.

Taxonomy and Nomenclature

• Scientific Name: Acarospora (Genus)
• Common Names: Cracked Lichen, Cobblestone Lichen
• Family: Acarosporaceae
• Kingdom: Fungi

Distribution and Habitat

• Narcotic lichen is described as rare and grows in desolate parts of the Rockies.
• Acarospora nodulosa has been found in Planalto das Cezaredas, Portugal.

Morphological Characteristics

• The lichen thallus is described as initially made up of separate lumps that grow together to form a continuous, cracked surface.
• Some species exhibit a cracked-areolate thallus.
• Some species have a white, cracked thallus that appears slightly frosted.
• Buellia subalbula is a species of lichen with a distinctive white, cracked thallus.
• Some cracked lichens have angular, bright yellow aeroles, with small apothecia (fruiting bodies).

Ecological Role

• Lichens contribute to the weathering of rocks, slowly breaking them down.

Species Examples Mentioned

• Acarospora aeruginosa Hasse - Cracked Lichen
• Acarospora albomarginata (Herre) Salisb. - Cracked Lichen
• Acarospora arenosa Herre - Cracked Lichen
• Acarospora gallica (Gallic Cracked Lichen)
• Acarospora impressula
• Acarospora nodulosa (Nodule Cracked Lichen)
• Acarospora schleicheri (Schleicher's Cracked Lichen)
• Acarospora socialis
• Acarospora badiofusca