SafePlants

Cockleshell Lichen (Hypocenomyce)

Cockleshell Lichen is a common name applied to various species within the genus Hypocenomyce. This lichen is part of the fascinating world of symbiotic organisms, showcasing a unique partnership between fungi and algae.

Considerations for Pets

• Lichens, in general, can grow on various surfaces, including rocks, trees, and even shells. While often not considered highly toxic, it's always wise to prevent pets from consuming large quantities of any wild-growing organism.

Taxonomy and Nomenclature

• Genus: Hypocenomyce
• Family: Lecideaceae
• Kingdom: Plantae (though lichens are not plants themselves, they were historically classified as such)
• Species Examples:
  • Hypocenomyce castaneocinerea
  • Hypocenomyce friesii
  • Hypocenomyce leucococca
  • Hypocenomyce praestabilis
  • Hypocenomyce scalaris
  • Hypocenomyce australis
  • Hypocenomyce sorophora
• Synonyms (for Hypocenomyce friesii):
  • Lecidea friesii Ach.
  • Psora friesii (Ach.) Hellbom

Common Names

• Cockleshell Lichen
• Fries' Cockleshell Lichen
• Common Clam Lichen (English)

Distribution and Habitat

• Observed on burnt stumps and veteran poplar trees.
• Found in various locations, including:
  • Cheboygan County, Michigan
  • &#268esk &#352vcarsko National Park
  • Dorset, Hampshire
  • Fleurieu Peninsula, South Australia (near sand dunes and mallee scrub)
  • Galindez Island, The Antarctic Peninsula

Morphological Characteristics and Growth Habits

• Grows in a lichenous habit.

Quirky Facts

• The name "Cockleshell" is also linked to "Operation Frankton" or "The Cockleshell Heroes" in WWII history.

Interactions with Other Organisms

• May grow alongside baby Cladonia lichens.
• Can be found on cockle shells (seashells), sometimes alongside mineral deposits.