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dot lichen

Scientific Name: Arthonia pyrrhuliza

Family: Arthoniaceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

Dot Lichen

The common name "Dot Lichen" refers to lichens belonging to the genera Arthonia or Micarea. "Dotted lichens" can also refer to lichens in the genus Bacidia. Many species within the genus Arthonia are also commonly referred to as Dot Lichen.

Considerations for Pets

  • Some Dot Lichens grow on tree bark and rocks, potentially making them accessible to pets exploring outdoors.

Considerations for Children

  • Some Dot Lichens grow on rocks and tree bark, potentially making them accessible to children exploring outdoors.

Taxonomy and Nomenclature

  • Kingdom: Fungi
  • Phylum: Ascomycota
  • Class: Lecanoromycetes
  • Order: Lecanorales (for some species, like Micarea erratica)
  • Family: Arthoniaceae (for genera like Arthonia), Icmadophilaceae (for Dibaeis absoluta), Micareaceae (for some species, like Micarea erratica)
  • Genus: Arthonia, Micarea, Bacidia
  • Synonyms/Alternative Names: Bacidia chlorococca (synonym for City Dot Lichen - Scoliciosporum chlorococcum)

Common Names

  • Dot Lichen
  • Dotted Lichen
  • Birchbark Dot Lichen (e.g., Leptorhaphis epidermidis, Leptorhaphis atomaria)
  • Orange Dot Lichen (Protoblastenia rupestris)
  • Pink Dot Lichen (Dibaeis absoluta)
  • Hidden Dot Lichen (Japewia tornoensis)
  • Cherry-laurel Dot Lichen
  • Dispersed Dot Lichen (Arthonia dispersa)
  • Tuckerman's Dot Lichen (Arthonia tuckermaniana)
  • Nitschke's Dot Lichen (Micarea nitschkeana)
  • Globe Dot Lichen (Micarea globulosella)
  • Frosty-rimmed Dot Lichen (Bacidia rubella)
  • City Dot Lichen (Scoliciosporum chlorococcum)
  • Erratic Dot Lichen (Micarea erratica)
  • Granite Firedot Lichen (Caloplaca arenaria)
  • Frosted-rimmed Dot Lichen
  • Firedot Lichen
  • Multicolored Dot Lichen

Distribution and Habitat

  • The most abundant lichen in the New Orleans area.
  • Found in Mt. Rainier National Park.
  • Observed on Palm tree bark in Bahia Honda Key, Florida, USA.

Morphological Characteristics

  • Some are crustose lichens with a grayish green thallus.
  • Mycobilimbia pilularis 'Dot Lichen' has yellowy brown biatorine, convex apothecia.
  • Pink Dot Lichen (Dibaeis absoluta) has pink apothecia born on very short (ca. 1 mm) stalks.

Quirky Facts

  • Some lichens grow in small dots on rocks in Mt. Rainier National Park.

Further Information

  • Encyclopedia of Life
  • Catalogue of Life: 2012 Annual Checklist
  • USDA
  • Smithsonian Institution, National Museum of Natural History, Department of Botany
  • ResearchGate