Definition of Lichens. Meaning of Lichens. Synonyms of Lichens

Here you will find one or more explanations in English for the word Lichens. Also in the bottom left of the page several parts of wikipedia pages related to the word Lichens and, of course, Lichens synonyms and on the right images related to the word Lichens.

Definition of Lichens

Lichen
Lichen Li"chen (l[imac]"k[e^]n; 277), n. [L., fr. Gr. leichh`n.] 1. (Bot.) One of a class of cellular, flowerless plants, (technically called Lichenes), having no distinction of leaf and stem, usually of scaly, expanded, frond-like forms, but sometimes erect or pendulous and variously branched. They derive their nourishment from the air, and generate by means of spores. The species are very widely distributed, and form irregular spots or patches, usually of a greenish or yellowish color, upon rocks, trees, and various bodies, to which they adhere with great tenacity. They are often improperly called rock moss or tree moss. Note: A favorite modern theory of lichens (called after its inventor the Schwendener hypothesis), is that they are not autonomous plants, but that they consist of ascigerous fungi, parasitic on alg[ae]. Each lichen is composed of white filaments and green, or greenish, rounded cells, and it is argued that the two are of different nature, the one living at the expense of the other. See Hyph[ae], and Gonidia. 2. (Med.) A name given to several varieties of skin disease, esp. to one characterized by the eruption of small, conical or flat, reddish pimples, which, if unchecked, tend to spread and produce great and even fatal exhaustion.

Meaning of Lichens from wikipedia

- lichens may contain the word moss (e.g., "reindeer moss", "Iceland moss"), and lichens may superficially look like and grow with mosses, but lichens are...
- Lichen pl**** is a chronic inflammatory and immune mediated disease that affects the skin, nails, hair, and mucous membranes. It is characterized by polygonal...
- all known lichens have a green alga as a symbiont. Among these, Trebouxia is the most common genus, occurring in about 20% of all lichens. The second...
- the Elements, 2007) White/Lichens – "S/T" (collaboration with White/Light on Holy Mountain, 2007) Cloudland Canyon/Lichens – "Exterminating Angel" (collaboration...
- Edible lichens are lichens that are edible.[citation needed] They include: Cetraria islandica (known as Iceland moss) Cladonia rangiferina Parmelia perlata...
- will appear powdery, but crustose lichens will leave a cortex surface, and leprose lichens do not. Leprose lichens have no inner or outer cortex. They...
- reproductive parts. Some lichen thalli have the aspect of leaves (foliose lichens); others cover the substrate like a crust (crustose lichens) (illustration, right)...
- leafy, the lichen may appear to be a foliose lichen, but the underside does not have a "skin" (cortex), as foliose lichens do. Squamulose lichens are composed...
- Lichen sclerosus (LS) is a skin disease of unknown cause, commonly appearing as whitish patches on the genitals, which can affect any body part of any...
- Lichenological Resources (Rus) Lichen Herbarium University of Oslo Lichenland Oregon State University Links to Lichens and Lichenologists Lichens of Ireland Project...
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