|Copyright: Alina Vicu (mamabear)
|Date Taken: 2009-10-04|
|Camera: Canon PowerShot A460|
|Exposure: f/2.8, 1/25 seconds|
|Photo Version: Original Version|
|Date Submitted: 2009-11-17 5:21|
|[Note Guidelines] Photographer's Note|
|I'm back with another "alien"...|
Cladonia (cup lichen) is a genus of moss-like lichens in the family Cladoniaceae. They are the primary food source for reindeer and caribou. Cladonia species are of economic importance to reindeer-herders, such as the Sami in Scandinavia or the Nenets in Russia. Antibiotic compounds are extracted from some species to create antibiotic cream. The light green species Cladonia stellaris is used in flower decorations.
Although the phylogeny of the genus Cladonia is still under investigation, two main morphological groups are commonly differentiated by taxonomists: the Cladonia morpho-type and the Cladina morpho-type. The Cladonia morpho-type has many more species, and is generally described as a group of squamulose (grow from squamules), cup-bearing lichens. The Cladina morpho-types are often referred to as forage lichens, mat-forming lichens, or reindeer lichens (due to their importance as caribou winter forage).
Cladonia perforata ("perforate cladonia") is one of two on the U.S. Endangered Species List, and it should never be collected. It exists only in a few small populations in Florida.
Several Cladonia species grow on sand dunes. The presence, and luxuriant carpet-like growth, of Cladonia species is one of the defining characters of grey dune, a priority habitat for conservation under the E.U. Habitats Directive.
Cladonia species are used as food plants by the larvae of some Lepidoptera species including Chionodes continuella.
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|To roges: Buna,||mamabear
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- [2009-11-17 5:29]
tu te-ai intors si noi ...(eu) te-am reperat. Din nou o imagine interesanta din ciclul aliens. Ca si calitate nu este chiar de top, dar ... ca si subiect este interesanta compozitia ta. Daca focusa-i pe licheni si lasa-i BG-ul in ceata cred ca iesea mai bine. Nu-i nimic data viitoare.
Salutari calduroase din Germania,
This is such an interesting subject - a great pity - that your subject be slightly out of focus.
I think - the photo would also improve - if you cropped quite a lot on the left, and also a bit on top (you know, the old rules of third are nearly always right...)
Have a nice day,