Bicuspid sedge ( Latin: Cārex binērvis ) is a species of herbaceous genus of the Cesace ( Carex ) of the Sopaceae family ( Cyperaceae ).
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Carex binervis Sm. 1800 | |||||||||||||||||||||||||
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It was described by the English scientist James Edward Smith in 1800 in the article Descriptions of the five new British species of Carex [3] .
Content
Botanical description
Perennial herb 15-150 cm tall.
The leaves are flat, 7-30 cm long and 2-6 mm wide. The lower surface of the leaves is light green, glossy; top - dark green, matte [4] . Roots with a diameter of 1-2 mm, have root hairs. Rhizome length 25-40 mm, light brown [5] .
Upper bracts scale-like, lower - leaf-shaped. Spike inflorescence consists of one staminate spikelet and two - four pistillate spikelets located on the sides. Male flower 20–45 mm long, with purple scales, whose diameter reaches 4–4.5 mm. Female flowers are cylindrical, from 15 to 45 mm long [4] . It is an entomophilus and anemonophil [6] .
Seeds enclosed in a pouch, 3.5–4.5 mm long, of a broadly elliptical shape, with serrated klyuoboobraznye ends; seed color - from purple-brown to pale green [4] . The bag has two green veins, thanks to this characteristic feature, the sedge has received a specific name [4] .
The number of chromosomes is 2n = 74 [7] .
Taxonomic position
The sedge bivalve, together with 37 species, is a member of the section subgenus The genus Osok ( Carex ) of the sedge family ( Cyperaceae ) [8] .
| 1 more subfamily | genus Osoka | |||||||||||||||
| Sedge family | Tribe Osokovye (tribe) | about 1500-2000 more species | ||||||||||||||
| order hercerebral | subfamily Sythee | four more genera, including Cobrezia | ||||||||||||||
| 15 more families (according to the APG III Classification System ), including Bromeliad , Sitnic | about thirteen more tribes | Sedge double-faced | ||||||||||||||
Hybrids
Natural sedge hybrids of two-fossil with smooth sedge ( Carex × deserta ), green sedge ( Carex × corstorphinei ), sedge dotted and sedge yellow are known [4] .
Ecology and distribution
The species is widely distributed throughout Europe . It is found in Finland , Norway , Great Britain , Germany , Belgium , France , Ireland , Portugal , Spain [9] .
Plants from Morocco , previously referred to as Carex binervis , are now highlighted in a separate species, Carex paulo-vargasii [2] .
It inhabits swamps, flood meadows, in mountainous areas, preferring acidic soils (it is an indicator of soil acidity) [4] [10] .
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 "Carex L." Flora Iberica.
- ↑ Descriptions of the five new British species of Carex . Linnean Society of London.
- ↑ 1 2 3 4 5 6 AC Jermy et al. Sedges of the British Isles. - BSBI Handbook. - P. 358-360. - ISBN 978-0-901158-35-2 .
- ↑ GH Heath & LC Luckwill. The rooting systems of heath plants // Journal of Ecology. - 1938. - № 26 .
- ↑ Adolfo F. Muñoz Rodríguez, Inmaculada Silva Palacios & Rafael Tormo Molina. Cyperaceae and Juncaceae pollutants in SW Spain // Aerobiologia. - № 23 . - P. 259-270. - DOI : 10.1007 / s10453-007-9072-0 .
- ↑ Clive A. Stace. New Flora of the British Isles. - Cambridge University Press, 2010. - p. 951-974. - ISBN 978-0-521-70772-5 .
- ↑ Marcial Escudero & Modesto Luceño. Systematics and evolution of Carex sects. Spirostachyae and Elatae (Cyperaceae) // Plant Systematics and Evolution. - 2007. - № 279 . - DOI : 10.1007 / s00606-009-0156-x .
- ↑ "Carex binervis Unc . Royal Botanic Gardens, Kew.
- County "County Durham (vc66) & South Northumberland (vc67) training meeting 7th - 8th July . Archived March 21, 2012.
Links
- Carex binervis , West Highland Flora