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Map Lichen?? on rock - Mason Lake

Map Lichen?? on rock - Mason Lake by brewbooks.
Map Lichen
Rhizocarpon geographicum a form of crust lichen crustose
See an interesting article on the use of lichens to measure the date of deposition.
yellow-green islands are areolae
black fungal hypothallus at the margin.

Note that there are other lichens on this rock, a whole little ecosystem

Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Rhizocarpaceae

Mason Lake, King County, Washington, USA

i083008 070 

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view photos Uploaded on October 8, 2008
by brewbooks

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Hikes08 Mt Defiance 29 Aug (Set)


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