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coccotrema lichen

Scientific Name: Coccotrema pocillarium

Family: Coccotremataceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Coccotrema maritimum

Coccotrema maritimum is a crustose lichen known commonly as volcano lichen, a name derived from the volcano-like appearance of its fruit bodies. Another common name is seaside coccotrema lichen.

Taxonomy and Nomenclature

  • Scientific Name: Coccotrema maritimum
  • Family: Coccotremataceae
  • Synonym: Perforaria (mentioned as a synonym of the genus Coccotrema)
  • Related Species: Coccotrema cucurbitula, Coccotrema pocillarium, Coccotrema corallinum, Coccotrema citrinescens, Coccotrema porinopsis, Coccotrema thelioplacum f. isidiosum
  • Coccotrema pocillarium is also known as Ochrolechia pacifica

Distribution and Habitat

  • Coccotrema maritimum can be found forming conspicuous bands along shoreline rocks, notably in locations like the Queen Charlotte Islands, British Columbia, and Vancouver Island (Tofino area).
  • It also occurs in southern South America.

Morphological Characteristics

  • The lichen thallus is creamy white to pinkish gray in color.
  • It can be fairly thick and form extensive patches or even bands.

Ecological Role

  • Coccotrema maritimum is a marine lichen, representing an intimate association between a fungus and an algae.
  • It can exhibit zonation patterns with other lichens like Verrucaria spp.

Interactions with Other Organisms

  • As a lichen, it consists of an intimate association between a fungus and an algae.

Further Information

  • The University of British Columbia Herbarium (UBC) has a collection including Coccotrema maritimum.
  • Brodo, I.M. (1973) The lichen genus Coccotrema in North America. - The Bryologist 76: 260-270.