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kidney lichen

Scientific Name: Nephroma expallidum

Family: Nephromataceae

Category: Lichen

Growth: Lichenous

Duration:

Other Names:

       

About Nephroma Lichens

Nephroma is a genus of medium to large foliose (leaf-like) lichens with a widespread distribution. There are currently 36 recognized species within the genus.

Common Names

  • Kidney lichen

Taxonomy and Nomenclature

  • Genus: Nephroma
  • Family: Nephromataceae
  • Kingdom: Fungi

Distribution and Habitat

  • The genus has a widespread distribution.
  • Specific locations mentioned include:
    • Abisko National Park, Sweden
    • Syte, Finland
    • Inverness-shire, Scotland
    • Denali National Park

Morphological Characteristics

  • Nephroma resupinatum (Pimpled Kidney Lichen): Grayish-brown, fuzzy lichen with apothecia (fruiting bodies) on the undersides of the lobes.
  • Nephroma arcticum (Arctic Kidney Lichen):
    • Large thallus (body) yellowish-green when dry, bright green when wet.
    • Broad, flat, gray bumps on the surface that contain cyanobacteria.
  • Medium-sized thallus with brown to grayish-brown upper surface and lobe tips with a woolly appearance. Lower surface pale and fuzzy with scattered whitish bumps.

Nephroma Species: Examples

  • Nephroma arcticum: Arctic Kidney Lichen.
  • Nephroma bellum: Naked Kidney Lichen, Cat Paw Lichen.
  • Nephroma helveticum: Swiss Kidney Lichen, Fringed Kidney Lichen.
  • Nephroma laevigatum: Mustard Kidney Lichen.
  • Nephroma resupinatum: Pimpled Kidney Lichen.

Traditional Uses

  • A medicinal tea is made from Nephroma arcticum, and it is reputed to restore strength to a person who is weak.

Interactions with Other Organisms

  • Nephroma arcticum is part of the Alaska Forest Foodweb.
  • Lichens are described as fungi that have "discovered farming," implying a symbiotic relationship with algae or cyanobacteria.

Further Information

  • USDA Plants Database.
  • Wikimedia Commons.