A sedimentary sedge ( lat. Carex supina ) is a perennial herbaceous plant of the genus Osok ( Carex ) of the family Osokovye ( Cyperaceae ).
Sedge Squat | |||||||||||||||||||||||||
General view of the plant, Austria | |||||||||||||||||||||||||
Scientific classification | |||||||||||||||||||||||||
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International Scientific Name | |||||||||||||||||||||||||
Carex supina Willd. ex Wahlenb. 1803 | |||||||||||||||||||||||||
Botanical description
Grayish-green plant with a long creeping rhizome , with reddish-brown underground shoots , forms friable or thick tussocks.
Stems are straight, thin, upwards rough, 5-15 (20) cm tall [2] , usually in bunches, at the base dressed with reddish or purple-brown one-piece or net-fibrous fissile sheaths .
Leaves curved or twisted, flat or folded, 1-1.5 mm wide [2] , thinly pointed, shorter than the stem.
Spikelets close together. Upper conical spikelet, lanceolate, clavate-lanceolate or linear-lanceolate, (0.5 [2] ) 0.8-1 [2] (1.3) cm long, not tilted to the side, with rusty or light rusty, lanceolate or linear-lanceolate and sharp scales; the remaining 1-2 pistillate , almost sessile, hemispherical, spherical or spherical-ovoid, barely 0.5—0.6 (0.8) cm in diameter [2] , with (2) 3-5 (7) spread bags [ 2] ; lower pistillate spike 0.5-0.8 cm long. The covering scales of the pistillate spikelets are ovoid or broadly ovoid, sharp, can be sharply pointed, rusted or light rusty, sharp, lighter or yellow streaked, white-ribbed at the edge (possibly wide), shorter than the sacs (can be shorter by ½ or more ), are almost equal to or equal to them. The bags in the cross section are rounded-triangular or nearly round, ovate, oblong-ovate or spherical-obovate, rounded-triangular, (2.8 [2] ) 3–3.5 (4) mm long, (1.5) 1 , 7-2 (2.3) mm wide, yellow, golden or honey-yellow or reddish-brown or rusty brown in the upper part, greenish-yellowish below, leathery, without veins , usually bare, glossy, almost sessile, at the base is wide, almost rounded wedge-shaped, with a cylindrical, at the end white-membranous, truncated nose (0.4) 0.5—0.7 (0.8) mm long. Rylets 3. Bottom covering leaf without vagina, scale-like with bristle tip, rusty.
The fruit does not completely fill the pouch. Fruits in May — August.
The number of chromosomes 2n = 36, 44, 48.
The species is described from Central Europe.
Spread
Central Europe ; The Arctic part of Russia : the Yamal Peninsula (the headwaters of the river Mordyakhi ), the Gydansky Peninsula (30 km east of Lake Vento ), the lower reaches of the Yenisei ( Dudinka vicinity), the lower reaches of the Anabara (Lake Ulakhan-Kühel ), the Chaunskaya Bay ( Baranikha ), basin White River , tributary Anadyr , Korf Bay , Lake Rmyrken , Amguema River, Wrangel Island ; Baltic States : Latvia ( Daugavpils District ); Belarus : Minsk region ( Nalibokskaya Forest ); Ukraine : the middle part of the Dnieper basin, the Black Sea region , Crimea ( Sudak neighborhood); Moldavia ; The European part of Russia : the Volga and Don basins, the lower Volga and Don basins, the Trans-Volga region ; Caucasus : all areas except the central part of the Greater Caucasus , very rarely in its eastern part; Western Siberia : Ob basin (south), Tobol headwaters, Irtysh basin, Altai ; Eastern Siberia : the upper reaches of the Yana and Indigirka and the vicinity of Yakutsk , Angaro-Sayan region (west); Central Asia : Aral-Caspian region (north), Kazakh lowland , sand between the Karatal and Aksu rivers, Zaisan hollow , Kyrgyz Alatau ; Western Asia : Northeastern Turkey , Northern Iran ; North America : Alaska , northern Canada , including the Arctic coast, Baffin Island , Southampton Island, southwestern and eastern Greenland .
It grows in steppes , on dry meadows , dry sandy places, in pine forests , sometimes along gravelly and sandy slopes; on the plain, in the foothills, less often in the mountains (up to the upper belt); often.
Economic value
It is a good forage grazing plant, but due to its insignificant participation in grass cover, it is of no significant economic importance.
Systematics
Within the species there are two varieties [3] :
- Carex supina var. spaniocarpa ( Steud. ) B.Boivin - sedge is not very frugal; Siberia, Far East , North America
- Carex supina var. supina - Europe, Siberia, Central and Western Asia
Variety Carex supina var. spaniocarpa ( Steud. ) B.Boivin differs from Carex supina var. supina ovoid narrower (1.5-1.7 mm wide) and therefore less sharply turning into the nose sacks, in the upper part of the reddish-brown, and scales, usually equal to the sacs or almost equal. This species was considered by Krechetovich V.I. in “Flora of the USSR” as an independent species of Carex spaniocarpa Steud , but the differences between them are too insignificant.
Notes
- ↑ On the conditionality of specifying the class of monocotyledons as a higher taxon for the group of plants described in this article, see the “APG Systems” section of the article “Monocotyledons” .
- ↑ 1 2 3 4 5 6 7 Krechetovich V.I. Genus 235. Sedge - Carex // Flora of the USSR : in 30 t. / Ch. ed. V.L. Komarov . - L .: Publishing House of the Academy of Sciences of the USSR , 1935. - T. 3 / ed. volume B. K. Shishkin . - p. 375-376. - 636, XXV with. - 5175 copies
- ↑ Carex supina in the Botanic Gardens database in Kew, United Kingdom (Tested May 11, 2010)
Literature
- Egorova T.V. The sedges (Carex L.) of Russia and adjacent states (within the former USSR) . - St. Petersburg, St. Louis: St. Petersburg State Technical Academy of Agriculture and the Missouri Botanical Garden, 1999. - p. 333-335. - 772 s.
- Arctic flora of the USSR. Issue III / Comp. T. V. Egorova, V. V. Petrovsky, A. I. Tolmachyov, V. A. Yurtsev; Ed. A.I. Tolmachyova. - L .: Science, 1966. - p. 145-146.
- Krechetovich V.I. Genus 235. Osok - Carex // Flora of the USSR : in 30 t. / Ch. ed. V.L. Komarov . - L .: Publishing House of the Academy of Sciences of the USSR , 1935. - T. 3 / ed. volume B. K. Shishkin . - p. 375-376. - 636, XXV with. - 5175 copies
- Gubanov, I.A., et al. 278. Carex supina Wahlenb. - Sedge squat // Illustrated determinant of plants in Central Russia. In 3 t . - M .: T-in scientific. ed. KMK, In-t technologist. survey., 2002. - T. 1. Ferns, horsetails, moss, gymnosperms, angiosperms (monocots). - p. 382. - ISBN 8-87317-091-6 .