SafePlants

Cladonia ecmocyna ssp. intermedia: The Intermediate Cup Lichen

The Cladonia ecmocyna ssp. intermedia, commonly known as intermediate cup lichen, is a fascinating lichenous plant. This unique organism is a symbiotic union between a fungus and an alga, showcasing a remarkable example of interspecies cooperation.

Considerations for Pets

• Lichens, including the Intermediate Cup Lichen, can sometimes be found on rocks, trees, and other outdoor surfaces that pets might encounter.

Taxonomy and Nomenclature

• Scientific Name: Cladonia ecmocyna Leight. ssp. intermedia (Robbins) Ahti
• Common Name: Intermediate Cup Lichen
• Rank: Subspecies
• Family: Cladoniaceae
• Synonyms: The text also references other Cladonia species and mentions "cup lichen" in conjunction with various names, suggesting a broader category of similar organisms.

Distribution and Habitat

• The text suggests that Cladonia ecmocyna ssp. intermedia is found in various locations, as it is mentioned in connection with databases, collections, and ecological surveys across different regions (though no specific geographic distribution is provided).
• Cladonia pleurota, another cup lichen, is noted as being mostly restricted to inland localities at intermediate to high elevations in Arizona. This gives context to the habitat that similar lichens may share.

Morphological Characteristics and Growth Habits

• The lichen thallus usually bears cup-like structures called apothecia.
• It is dimorphic.
• The text describes it as a form intermediate between crustose (crust-like) and foliose (leaf-like) lichens.

Ecological Role

• Lichens, in general, are highlighted as bioindicators, with specific references to nitrogen-sensitive lichens and the study of air quality. This suggests that their presence or absence can reflect environmental conditions.

Interactions with Other Organisms

• Lichens are described as a symbiotic union between a fungus and an alga, where the fungus provides protection and gains nutrients in return.

Quirky Facts

• The text mentions "Intermediate" in unusual contexts such as sports competitions (Intermediate Cup in Northern Irish football, English Schools Cross Country Cup) and even a singletrack trail named "Lichen It" in Stevens Bike Park. While unrelated to the lichen itself, these instances highlight the varied use of the word "intermediate".

Resources and Further Information

• USDA PLANTS database
• Consortium of North American Lichen Herbaria (http://lichenportal.org/portal/collections/individual/index.php?occid=1527963)
• ABRS lichens glossary
• Flora of Australia Glossary - Lichens
• New Flora of the British Isles 3rd Edition C.A.Stace CUP 2010