slovodefinícia
Lichenes
(gcide)
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}.
[1913 Webster]

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.
[1913 Webster]

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.
[1913 Webster]
lichenes
(wn)
Lichenes
n 1: comprising the lichens which grow symbiotically with algae;
sometimes treated as an independent group more or less
coordinate with algae and fungi [syn: Lichenes, {division
Lichenes}]
podobné slovodefinícia
division lichenes
(encz)
division Lichenes, n:
Lichenes
(gcide)
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}.
[1913 Webster]

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.
[1913 Webster]

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.
[1913 Webster]
division lichenes
(wn)
division Lichenes
n 1: comprising the lichens which grow symbiotically with algae;
sometimes treated as an independent group more or less
coordinate with algae and fungi [syn: Lichenes, {division
Lichenes}]

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