What is a lichen?
A lichen ( / ˈlaɪkən / LY-ken or, sometimes in the UK, / ˈlɪtʃən /, LICH-en) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship. Lichens have properties different from those of their component organisms.
What is lichenized fungus?
Depending on context, “lichenized fungus” may refer to the entire lichen, or to the fungus when it is in the lichen, which can be grown in culture in isolation from the algae or cyanobacteria. Some algae and cyanobacteria are found naturally living outside of the lichen.
What do you do with petrified lichen?
This lump of lichen was frozen solid by the cold. Once defrosted, you can use it in a Frigostian variant of Black Pudding Pizza. Petrified Lichen is a quest item .
What is the history of lichen sclerosus (LS)?
Lichen sclerosus et atrophicus was first described in 1887 by Dr. Hallopeau. Since not all cases of lichen sclerosus exhibit atrophic tissue, et atrophicus was dropped in 1976 by the International Society for the Study of Vulvovaginal Disease (ISSVD), officially proclaiming the name lichen sclerosus. ^ James, William D.; Berger, Timothy G. (2006).
Lichens are bizarre organisms and no two are alike. Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga.
What is the dominant partner of lichen?
The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies. The alga can be either a green alga or a blue-green alga, otherwise known as cyanobacteria.
What can lichen thallus tell us about the environment?
Lichens can provide us with valuable information about the environment around us. Any heavy metals or carbon or sulfur or other pollutants in the atmosphere are absorbed into the lichen thallus. Scientists can extract these toxins and determine the levels that are present in our atmosphere.
What is the United States Forest Service National lichen&air quality database?
The United States Forest Service National Lichens & Air Quality Database and Clearinghouse provides more information about lichen biomonitoring and how it is helping federal land managers meet federal and agency responsibilities to detect, map, evaluate trends, and assess the ecological impacts of air pollutants. Lichen Biology…