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Dog Lichen  Geotagged,Lichen,Peltigera membranacea,United States,Winter Click/tap to enlarge Promoted

    comments (2)

  1. Nice one! Posted one year ago
  2. From today's JungleDragon Facebook post:

    Lichens represent one of the most successful alliances in nature. They are mutualistic relationships between fungi and algae or cyanobacteria. This partnership is beneficial because fungi are incapable of photosynthesis since they lack chlorophyll, which means that they can't use sunlight to produce their own food. Algae and cyanobacteria, however, are photosynthetic organisms. In fact, algae make nearly half of the oxygen in the Earth’s atmosphere! So, the fungus gives the lichen structure and provides a safe place to live, while the alga (or cyanobacterium) provides the food. Lichens grow worldwide and in a variety of environmental conditions. Furthermore, they are involved in several important environmental processes such as soil formation, nitrogen fixation, biological succession, and biological weathering.

    Peltigera is a genus of foliose dog lichens that have a structure that superficially resembles veined leaves even though they have no vascular function. It's common name comes from the fact that it's orange, reproductive apothecia resemble the teeth of a dog. Dog lichens are abundant in nature and grow on various substrates, worldwide. Many species of Peltigera have the cyanobacterium, Nostoc, as their dominant phytobiont. This is important because Nostoc is able to fix atmospheric nitrogen and contributes significant amounts of fixed nitrogen to the ecosystems where it lives. Nitrogen is a crucial limiting agent for plant growth and is a major component of chlorophyll and amino acids, in addition to other biomolecules. While nitrogen is abundant in the Earth's atmosphere, plants can only use reduced forms of the element, which is why nitrogen fixation is so vital. Nitrogen fixation breaks down nitrogen into a useable form and is one of the most important biochemical processes on Earth. It is essential for life. {Peltigera membranacea spotted in Oregon by JungleDragon user, mossy rock studio} #JungleDragon

    Posted one year ago

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''Peltigera membranacea'' is a species of lichenized fungus in the family Peltigeraceae. It has a foliose growth pattern, with what appear to be veins in the leaf-like parts, but these do not have a vascular function.

Similar species: Peltigerales
Species identified by mossy rock studio
View mossy rock studio's profile

By mossy rock studio

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Uploaded Jan 27, 2019. Captured Jan 24, 2019 16:17 in 24526 S Metzler Park Rd, Estacada, OR 97023, USA.
  • X-T2
  • f/1.4
  • 1/90s
  • ISO200
  • 16mm