Reference results for Lichen from Search.com.

Lichen - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Lichen

A lichen is a composite organism that arises from algae or cyanobacteria (or both) living among filaments of a fungus in a symbiotic relationship. [1] [2] [3] The ...

Lichen | definition of lichen by Medical dictionary

medical-dictionary.thefreedictionary.com/lichen

lichen [li´ken] 1. any of certain plants formed by the mutualistic combination of an alga and a fungus. 2. any of various papular skin diseases in which the lesions ...

lichen sclerosus - WebMD

www.webmd.com/skin-problems-and-treatments/lichen-sclerosus

Lichen sclerosus is a chronic skin disorder that most commonly affects post-menopausal women. However, it is sometimes identified among pre-menopausal ...

Lichens - Backyard Nature

www.backyardnature.net/lichens.htm

LICHEN ECOLOGY: Ecologically, lichens are important because they often occupy niches that, at least sometime during the season, are so dry, or hot, or sterile ...

Lichen Planus: Facts on Causes, Treatment, and Symptoms

www.medicinenet.com/lichen_planus/article.htm

Learn about lichen planus causes, symptoms (oral, vaginal rash), types (hypertrophic, erosive), facts about the skin disorder, and treatment (corticosteroid drugs).

Lichen - New World Encyclopedia

www.newworldencyclopedia.org/entry/Lichen

A lichen is a composite organism composed of a fungus (the mycobiont) in a symbiotic relationship with a photosynthetic partner (the photobiont, also known as the ...

Lichen planus | American Academy of Dermatology

https://www.aad.org/public/diseases/rashes/lichen-planus

Lichen planus: When bumps appear on the skin, the bumps are often shiny, firm, and reddish purple. Lichen planus: Signs and symptoms . The signs and symptoms of ...

Lichens of North America

www.lichen.com

LICHENS OF NORTH AMERICA. This website grew out of the activities of Sylvia and Stephen Sharnoff, who did the photographic fieldwork for the book Lichens of North ...

Lichen planus - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Lichen_planus

Lichen planus (LP) is a disease of the skin and/or mucous membranes that resembles lichen. The cause is unknown, but it is thought to be the result of an autoimmune ...

Lichen - Simple English Wikipedia, the free encyclopedia

https://simple.wikipedia.org/wiki/Lichen

The fossil record for lichen dates back 400 million year for certain, and the signs are that earlier forms existed 600 million years ago. They must have been one of ...