Usnea ( lat. Usnea ) is a genus of the Parmelia family lichens , which includes about 300 species distributed in various climatic zones , but especially widely in the temperate forest zone.
| Asleep | |||||||||||||||||||||
 Asleep almost blooming ( Usnea subfloridana ) | |||||||||||||||||||||
| Scientific classification | |||||||||||||||||||||
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| International scientific name | |||||||||||||||||||||
Usnea Dill. ex Adans. , 1763 | |||||||||||||||||||||
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| Type view | |||||||||||||||||||||
Usnea florida - Falling asleep [1] | |||||||||||||||||||||
Content
Biological Description
The usn thallus is yellowish-green, of various lengths, often up to 1-2 m, bushy or in the form of a “beard”. The Usney genus is characterized by the presence in the center of thallus branches of a strong axial cylinder formed by a dense plexus of hyphae . Branches are usually with fibrils , less often without them. Apothecia is surrounded by a crown of fibrils.
All species of this genus are epiphytes on the bark and branches of trees , less commonly found on stones, fences, logs.
Chemical Composition
Usnya in large quantities contains usnic acid specific for lichens, which has strong antibiotic properties.
Some Views
- Usnea articulata (L.) Hoffm. , 1796 - Dilapidating the joint
- Usnea barbata ( L. ) Weber ex FHWigg. , 1780 - Usnya bearded
- Usnea bismolliuscula Zahlbr. , 1923 - Asleeping twice soft
- Usnea cavernosa tuck. , 1850 - Usnaia cavernosa
- Usnea ceratina Ach. , 1810 - Waxing Waxed
- Usnea chaetophora Stirt., 1883 - Ascetic bristle-bearing
- Usnea dasypoga - Asnaya Densebeard
- Usnea diplotypus vain . , 1925 - Dismantling Dupype
- Usnea filipendula Stirt., 1881 - Asnaya filament
- Usnea flagilescens Hav. ex Lynge , 1921 - Falling asleep breaking
- Usnea florida (L.) Weber ex FHWigg., 1780 - Usnea flowering
- Usnea fulvoreagens ( Räsänen ) Räsänen, 1935 - Reducing redhead
- Usnea glabrata (Ach.) Vain., 1915 - Diminished bare
- Usnea glabrescens ( Nyl. Ex Vain.) Vain., 1925 - Growing bare
- Usnea hirta (L.) Weber ex FHWigg., 1780 - Dreams of Rough-Haired
- Usnea lapponica Vain., 1925 - Usneya Lapland
- Usnea longissima Ach. , 1810 - Asleep the Longest
- Usnea rigida (Ach.) Motyka , 1936 - Difficult Rigging
- Usnea roseola Vain., 1921 - Asnaya pinkish
- Usnea rubicunda Nyl., 1881 - Asnea reddish
- Usnea scabrata Nyl., 1875 - Asleep Rough
- Usnea subfloridana Stirt., 1882 - Asnaya almost blooming
- Usnea substerilis Motyka, 1936 - Asnea is almost barren
- Usnea wasmuthii Räsänen, 1931 - Usneya Vasmuta
Notes
- ↑ 1 2 Usney (English) on the MycoBank website.
Literature
- Golubkova N. S. The determinant of lichens in the middle band of the European part of the USSR. - M. - L .: Nauka, 1966 .-- S. 210-211. - 257 p. - 2000 copies.
- Plant Life: In 6 t. / Ed. A. L. Takhtadzhyana. - M.: Education, 1981. - T. 3. Algae and lichens.
- Determinant of lichens in Russia / ed. ed. N. S. Golubkova . - SPb. : Science, 1996. - T. 6. Electric, Parmelia, Stereocaulon. - S. 62-107. - 203 p.