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dot lichen

Scientific Name: Arthonia subdispuncta

Family: Arthoniaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Dot Lichen: An Overview

The term "Dot Lichen" is a common name applied to lichens belonging to either the genus Arthonia or the genus Micarea. Additionally, lichens in the genus Bacidia are referred to as "Dotted Lichens."

Considerations for Pets

  • Lichens can grow on various surfaces, including tree bark and rocks, which pets might encounter outdoors.

Considerations for Children

  • Lichens are frequently found on rocks and trees in outdoor environments where children play.

Taxonomy and Nomenclature

  • Group: Lichen
  • Family: Arthoniaceae (for Arthonia species) and Icmadophilaceae (for Dibaeis absoluta) and Micareaceae (for Micarea erratica).

Distribution and Habitat

  • Dot lichens are found in various regions, including the New Orleans area, Mount Rainier National Park, and Bahia Honda Key, Florida.

Morphological Characteristics

  • Mycobilimbia pilularis, a dot lichen, is a crustose lichen with a grayish-green thallus and yellowy-brown apothecia.
  • DIBAEIS ABSOLUTA (Pink Dot Lichen) features pink apothecia on short stalks.

Examples of Dot Lichen Species

  • Arthonia arthonioides
  • Arthonia asteriscus
  • Arthonia exilis
  • Arthonia tuckermaniana
  • Arthonia glebosa
  • Micarea nitschkeana
  • Bacidia rubella (Frosty-rimmed Dot Lichen)
  • Micarea erratica (Erratic Dot Lichen)
  • Scoliciosporum chlorococcum (City Dot Lichen) - Synonym: Bacidia chlorococca

Other Lichens Mentioned

  • Leptorhaphis epidermidis (Birchbark Dot Lichen)
  • Leptorhaphis atomaria (Birchbark Dot Lichen)
  • Micarea globulosella (Globe Dot Lichen)
  • Japewia tornoensis (Hidden Dot Lichen)
  • Protoblastenia rupestris (Orange Dot Lichen)
  • Dibaeis absoluta (Pink Dot Lichen)
  • Caloplaca arenaria (Granite firedot lichen)
  • Cliostomum griffithii (Multicolored dot lichen)
  • Caloplaca holocarpa (Firedot lichen)
  • Punctelia bolliana (Speckled Shield Lichen)

Resources

  • Encyclopedia of Life
  • Catalogue of Life
  • USDA
  • Smithsonian Institution, National Museum of Natural History, Department of Botany
  • ResearchGate