The sedge is sharp , or the sedge is harmony , or the sedge is two- banded , or the sedge is brown-vaginal , or the sedge Sarepta ( Latin: Carex acuta ) is a perennial herbaceous species of the genus Sedge ( Carex ) of the sedge family ( Cyperaceae ).
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Carex acuta L. , 1753 | |||||||||||||||||||||||||
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Content
- 1 Botanical Description
- 2 Distribution
- 3 Economic value
- 4 notes
- 5 Literature
- 6 References
Botanical Description
2 - Carex acuta
A green plant with creeping rhizomes , forming loose and maybe dense turfs, sometimes forming tufts, with rather long brownish-yellow hairs, giving thick shoots .
The stems are acute-angled, very rough, drooping at the top, height (30 [5] ) 50-120 (150 [5] ) cm, surrounded at the base by reddish-brown, brownish-yellow, brown, purple or black-purple leaf sheaths.
Leaves are flat 5-8 mm wide, dry - rolled back along the edge, equal to the stem.
Inflorescence 10-25 (30) cm long; upper 2-3 (4 [5] ) spikelets stamen , closely spaced, oblong, 2-6 cm long [5] , with obovate, obtuse, dark brown scales; the remaining 3-4 (5) are pistillate , usually multiflorous , loose, narrow cylindrical, (2.5) 3-7 (10 [5] ) cm long, 0.6-0.8 cm wide [5] , almost sessile or lower ones, sometimes up to 2 cm long, drooping. Covering scales of pistillate spikelets are mostly lanceolate, usually 1.5 times longer than the sac, less often or equal to it, very rarely shorter than it, always narrower than the sac, with one vein , black-brown, with a white keel. The bags are biconvex, slightly swollen, elliptical or obovate, 3 mm long [5] , rusty or brownish, thin-skinned, with 5-6 thin veins on both sides, quickly narrowed into a short leg at the base, with a short, one-piece, rarely weakly notched nose; brown spout on top. Stigma 2. The lower covering sheet without a vagina, linear, rarely bristle-shaped, exceeds the inflorescence.
Fruits in May-August.
The number of chromosomes is 2n = 72, 74–76, 78, 82–85, 84.
The view is described from Europe.
A very polymorphic species, varying in size of inflorescence, the length of pistillate spikelets, the ratio of the length of the sac and the covering scales, the shape of the sacs (elliptical, ovate, obovate, sometimes wide ovoid).
Distribution
Northern, Atlantic, Central and Southern (rarely) Europe ; The Baltic states ; The Arctic part of Russia: Murman , Kanin , Malozemelskaya tundra (rarely), Bolshezemelskaya tundra , the Polar Urals , the lower Ob ; European part of Russia ; Belarus ; Ukraine : all areas except Crimea ; Moldova ; Caucasus : the vicinity of Stavropol , western and eastern parts of the Greater Caucasus (very rare), Western, Central and Southern Transcaucasia ; Western Siberia : the western part of the Ob basin, the upper reaches of Tobol , the Irtysh basin, Altai ; Eastern Siberia : mainly in the southern part, to the latitude of Yakutsk ; Kazakhstan : eastern and northern parts; Far East : basins of the Zeya and Bureya rivers, the vicinity of Vladivostok (probably alien); West Asia : Turkey , Syria , Lebanon ; Central Asia : Northern Mongolia ; North Africa
It grows along the banks of reservoirs and in water, in marshy meadows , low-lying sedge-grass swamps ; on the plain and in the upper zone of the mountains; often forms thickets.
Economic value
In some places it is harvested for hay, but cattle, thanks to sharp leaves and stems, are eaten poorly. In silage form, it provides good feed for cattle . Harvest of hay 25-35 centners per ha, silage - 80-120 centners per ha.
Notes
- ↑ For the conventionality of indicating the class of monocotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Monocotyledonous article .
- ↑ Carex acuta in the Botanic Gardens database in Kew, United Kingdom (Retrieved May 9, 2010)
- ↑ Carex acuta L. . Nomenclatural Data Base . Missouri Botanical Garden , 4344 Shaw Boulevard, St. Louis, MO with Web TROPICOS (1753). Date of treatment December 31, 2007. Archived April 23, 2012.
- ↑ Flora of Northern Ireland . Vascular Plant Database for Northern Ireland . National Museums and Galleries of Northern Ireland and Environment and Heritage Service (2000–2004). Date of treatment December 31, 2007. Archived June 18, 2012.
- ↑ 1 2 3 4 5 6 7 Krechetovich V.I. Genus 235. Sedge - Carex // Flora of the USSR : in 30 tons / chap. ed. V.L. Komarov . - L .: Publishing House of the Academy of Sciences of the USSR , 1935. - T. 3 / ed. volumes B.K. Shishkin . - S. 210-214. - 636, XXV p. - 5175 copies.
Literature
- Egorova T.V. Sedges (Carex L.) of Russia and neighboring states (within the former USSR) . - St. Petersburg, St. Louis: St. Petersburg HCFA and the Missouri Botanical Garden, 1999. - S. 446-447. - 772 p.
- Arctic flora of the USSR. Vol. III / Comp. T.V. Egorova, V.V. Petrovsky, A.I. Tolmachev, V.A. Yurtsev; Ed. A.I. Tolmacheva. - L .: Nauka, 1966 .-- S. 96.
- Krechetovich V. I. Genus 235. Sedge - Carex // Flora of the USSR : in 30 tons / chap. ed. V.L. Komarov . - L .: Publishing House of the Academy of Sciences of the USSR , 1935. - T. 3 / ed. volumes B.K. Shishkin . - S. 210-214. - 636, XXV p. - 5175 copies.
- Gubanov I.A. et al. 220. Carex acuta L. ( C. gracilis Curt.) - Acute sedge // Illustrated identifier of plants in Central Russia. In 3 t . - M .: T-in scientific. ed. KMK, Institute of Technology. ISS., 2002. - T. 1. Ferns, horsetails, crowns, gymnosperms, angiosperms (monocotyledons). - S. 324. - ISBN 8-87317-091-6 .