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

- mutualistic relationship. Lichens are the lifeform that first brought the term symbiosis (as Symbiotismus) into biological context. Lichens have since been recognized...
- located near the lichen's centre. Lichens with this structure are called "umbilicate". In general, medium to large epiphytic foliose lichens are moderately...
- 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...
- Lichen pl**** (LP) is a chronic inflammatory and autoimmune disease that affects the skin, nails, hair, and mucous membranes. It is not an actual lichen...
- The following outline provides an overview of and topical guide to lichens. Lichens are composite organisms made up of multiple species. They comprise...
- composer and sound artist who records under the moniker Lichens. In live performances as Lichens, Lowe incorporates spontaneous arrangements of voice and...
- the lichen. Many fruticose lichens have fine, round, hair-like structures and are loosely attached to rocks and trees. Although fruticose lichens are...
- Edible lichens are lichens that have a cultural history of use as a food. Although almost all lichen are edible (with some notable poisonous exceptions...
- baldensis Verrucaria marmorea Caloplaca luteominea ssp. bolandri Lichen Vocabulary, LICHENS OF NORTH AMERICA, Sylvia and Stephen Sharnoff, [1] Archived 2015-01-20...
- Crustose lichens are lichens that form a crust which strongly adheres to the substrate (soil, rock, tree bark, etc.), making separation from the substrate...