Yellowstraw [2] , or Darkstraw [3] ( lat. Pycréus flavéscens ) is an annual herbaceous plant ; a species of the genus Sitovnik ( Pycreus ) of the sedge family ( Cyperaceae ).
| Yellowstraw |
General view of a group of plants |
| Scientific classification |
|---|
| Grade: | Monocotyledonous [1] |
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| International scientific name |
|---|
Pycreus flavescens ( L. ) P. Beauv . ex rchb. , 1830 |
| Security status |
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Least ConcernedIUCN 3.1 Least Concern : 157979 |
|
Content
The russet is yellowish.
Botanical illustration from a book by
O. V. Tome Flora von Deutschland, Österreich und der Schweiz , 1885
An annual herbaceous plant 5–40 cm high. The stems are trihedral, smooth, gathered in bunches. The leaves are linear, 1-2 mm wide, sharp. Spikelets are compressed, linearly oblong, 6-10 mm long, 2-3 mm wide, bunched into a single spherical or hemispherical inflorescence with 2-3 noticeably larger covering leaves exceeding its length. Covering scales about 2 mm long, widely elliptical, blunt at the end, with a short thin pointed tip, yellowish or dark brown with a green keel. Stamens 3, stigma 2. The fruit is a nutlet, biconvex, almost round, about 1 mm long.
Blossoms in July-August, bears fruit in August-September [3] .
Within the range, it lives on silty, sandy shores of water bodies, marshy places, ruts of small roads, ravine bottoms. It is widespread in Russia in the non-chernozem zone: it is noted for the Bryansk, Vladimir, Voronezh, Kaluga, Kostroma, Moscow, Nizhny Novgorod, Smolensk, Tver regions. Also noted in the Lipetsk, Tambov and Kursk regions.
The limiting factors are the narrow ecological amplitude of the species near the border of the range. Destruction of habitats during hydro construction, land reclamation, with the expansion of recreational areas and increased load on them [3] .
In Russia
In Russia, the species is included in the Red Books of the Voronezh , Lipetsk and Pskov Regions [2] .
It grows in the Khopersky Reserve [4] .
In Ukraine
By decision of the Lugansk Regional Council No. 32/21 of December 3, 2009, the species is included in the “ List of Regionally Rare Plants of the Lugansk Region ” [5] [6] .
It is also included in the Red Books of Donetsk and Transcarpathian regions [2] .
Other European countries
It is also included in the Red Book of the Republic of Lithuania [2] .
- Chlorocyperus abyssinicus ( Hochst. Ex A.Rich. ) Rikli , 1895
- Chlorocyperus flavescens (L.) Rikli, 1895
- Cyperus abyssinicus Hochst. ex A.Rich., 1851
- Cyperus durandii Boeckeler , 1895
- Cyperus flavens Pall. , 1795
- Cyperus flavescens L., 1753 basionym
- Cyperus fontanesii Kunth , 1837
- Cyperus gussonei Gasp. , 1844
- Cyperus ligusticus gand. , 1876
- Cyperus melanostachyus Walp. , 1852, nom. illeg.
- Cyperus nieuwlandii Geise , 1934
- Cyperus obtusiusculus gand., 1876
- Cyperus pallidus Kit. ex Kanitz , 1864
- Cyperus paraensis Mart. & Schrad. ex Nees , 1842
- Cyperus piceus Liebm. , 1850
- Cyperus poaeformis Pursh , 1814
- Cyperus setaceus Wulfen , 1858
- Cyperus stramineus Link , 1829
- Cyperus tonduzianus Boeckeler, 1895
- Cyperus tristachyus Boeckeler, 1868
- Cyperus xanthinum J. Presl , 1828
- Distimus flavescens (L.) Raf. , 1819
- Pycreus paraensis Nees, 1842
- Pycreus piceus (Liebm.) CBClarke , 1908
- Pycreus potosiensis CBClarke, 1908
- Pycreus tristachyus (Boeckeler) CBClarke, 1908
- ↑ 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 .
- ↑ 1 2 3 4 Pycreus flavescens : information on the taxon in the Plantarium project (identifier of plants and an illustrated atlas of species). (Retrieved November 11, 2013)
- ↑ 1 2 3 The Red Book view of Pycreus flavescens in the Red Book of the Voronezh Region (Neopr.) (Inaccessible link) . Protected areas of Russia. Date of treatment November 11, 2013. Archived November 11, 2013.
- ↑ Pycreus flavescens (L.) Reichenb. (Russian) . Protected areas of Russia. Date of treatment November 11, 2013.
- ↑ D. b. n., prof. T. L. Andrienko, K. b. n M. G. Peregrim. Official lists of regionally rare plants of administrative territories of Ukraine (reference publication) . - Kiev: Alterpres, 2012 .-- S. 148. - ISBN 978-966-542-512-0 . Archived on October 29, 2013. Archived October 29, 2013 on Wayback Machine
- ↑ Decision of the Lugansk Regional Council No. 32/21 of December 3, 2009 "On approval of the List of plant species listed in the Red Book of Ukraine that are subject to special protection in the Lugansk region" (Russian) (inaccessible link) . Of. site of the Lugansk regional council. Date of treatment November 27, 2013. Archived October 29, 2013.
- Gubanov I.A. et al. 295. Pycreus flavescens (L.) Reichenb. - Yellowstalk // Illustrated identifier of plants of Central Russia. In 3 t . - M .: T-in scientific. ed. KMK, Institute of Technology. ISS., 2003. - T. 2. Angiosperms (dicotyledonous: dicotyledonous). - S. 399. - ISBN 9-87317-128-9 .
