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lichen
lichen
lichen (ly-kĕn) n. any of several types of skin disease.
l. planus an extremely itchy skin disease of unknown cause. Shiny flat-topped mauve spots may occur anywhere but are characteristically found on the inside of the wrists. It may take the form of a white lacy pattern in the mouth, which usually produces no symptoms.
l. simplex chronicus (
neurodermatitis) thickened eczematous skin that develops at the site of constant rubbing, often at the nape of the neck (in women) or lower legs (in men).
l. sclerosus a chronic disease affecting the anogenital area, especially the vulva in women, and characterized by sheets of ivory-white skin.
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Lichens.
Magazine article from: Ranger Rick; 9/1/1995; ; 700+ words
; ...squirrels, deer, and elk also eat lichens. Lichen Medicine For centuries, lichens...lichens growing on their backs! Lichen Fashion Lichens are sometimes used to make...looking--you may take a lichen to them! Lichens can look really different...
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Lichens on down wood in logged and unlogged forest stands.(Report)
Magazine article from: Canadian Journal of Forest Research; 5/1/2008; ; 700+ words
; ...down wood sustained lichen richness equivalent...classes favourable to lichens are retained after...substrate to which some lichen species are restricted. Many lichens occur on both standing...reduces sources of lichen propagules to colonize...
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Lichens, mold and spores.
Magazine article from: Science Weekly; 12/12/2005; 700+ words
; ...contact with a fungus, a lichen can result. Kinds of Lichens There are more than 15...sunlight to make food for the lichen. How Do Lichens Reproduce? Lichens can...off and grow into a new lichen. Usefulness of Lichens Lice, moths, spiders...
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Lichens promote flowering of Opuntia fragilis in West-Central Wisconsin
Magazine article from: The American Midland Naturalist; 10/1/2003; ; 700+ words
; ...the ecology of lichen mats exists except for studies of lichens and reindeer in...in some of the lichen nuits and elsewhere without lichens. The most striking...the presence of lichen mats produced...cacti without lichens never flowered...
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Lichens from the Hudson Bay Lowlands: diversity in the southeastern peatlands of Wapusk National Park, Manitoba.
Magazine article from: Canadian Journal of Botany; 12/1/2006; ; 700+ words
; ...influence of habitat on lichen chemistry, and genetic variation of lichen algae in northern...floristic study, lichens, raised beach ridges...caribou that feed on lichens (Edwards and Ritcey...Bergerud 1972). Lichen diversity on peatlands...
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Lichen represents symbiotic relationship
Newspaper article from: Tribune-Review/Pittsburgh Tribune-Review; 1/7/2007; ; 700+ words
; ...view was that the lichen was the prison...biologists who study lichens, have long discussed...unlikely place we find lichens is in perfumes and...oak moss, again lichen and not a moss...dominant vegetation is lichen mats. Like other vegetation, where lichens cover the ground...
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Esophageal Lichen Planus
Magazine article from: Archives of Pathology & Laboratory Medicine; 6/1/2008; ; 700+ words
; * Esophageal lichen planus is an underrecognized condition, with fewer than 50 cases reported to date. Unlike cutaneous lichen planus, esophageal lichen planus occurs almost exclusively in middle-aged or older women...
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Lichens are surprisingly precise air quality monitors.
Newspaper article from: Life Science Weekly; 1/27/2003; 700+ words
; ...Previously, we knew that lichens took things up from...that what is in the lichen accurately reflects...his father gather lichen samples from more...the duo focused on lichens collected at Chiricahua...status by collecting lichen samples and determining...quantified wherever lichens ...
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Lichens: the "tough guy" plants.
Magazine article from: Highlights for Children; 6/1/1998; ; 700+ words
; ...happened. What makes lichens so different from other plants? Each type of lichen is a partnership between...a good spot, a new lichen grows. However, a "good spot" for a lichen may be unfriendly to other plants. Lichens are called pioneer...
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LICHENS.(may contain new natural herbicide)(Brief Article)
Magazine article from: Agricultural Research; 1/1/2001; ; 700+ words
; ...together to form a lichen. When it's possible...help assign names to lichens and to make identifications...compounds are unique to lichens," says Dayan...of over 600 known lichen compounds--occurring...biosynthesis. The lichen project provides...research: exploiting lichens as ...
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Lichens
Book article from: Plant Sciences
...nutrition and survival. Lichen Types and Reproduction Lichens come in many shapes...less perilous way for lichens to reproduce. Any fragment of a lichen containing both the...developing into a new lichen. Many lichens have, in fact, evolved...
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lichen
Book article from: The Columbia Encyclopedia, Sixth Edition
...The fungal component of lichens produces acids that disintegrate rock, giving the lichen a better hold and aiding...turn rock into soil. Lichens usually reproduce by...V. Alimadjian, The Lichen Symbiosis (1967...Jr., The Biology of Lichens (1970); I. M. Brodo...
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Lichen
Book article from: Biology
...From a distance, a lichen is a brightly colored...hanging from branches. Lichens are found in diverse...than when part of a lichen, but the situation...cyanobacterium. Lichens may reproduce with...13,500 types of lichen are recognized...Susan. "Yikes! The Lichens Went Flying." ...
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Lichen Planus
Book article from: World of Microbiology and Immunology
Lichen planus Lichen planus is a skin rash characterized by small, flat-topped, itchy...Although the evidence is not conclusive, many researchers assert that Lichen planus is an autoimmune disease. Lichen planus affects approximately...
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Lichen Simplex Chronicus
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed.
Lichen Simplex Chronicus Definition Lichen simplex chronicus is a chronic inflammation of the skin ( dermatitis...result of scratching. Description Also termed neurodermatis, lichen simplex chronicus is the result of chronic skin irritation...
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