Overview

Distribution

Range Description

This species occurs in northern and southern Africa and from Europe east through Siberia, the Caucasus, the Middle East, Kazakhstan and the Himalayas in India to Mongolia and the Russian Far East.
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National Distribution

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Description

Perennial, 50-150 cm. Rhizome horizontal, 7-8 mm diam. Stem 3-10 mm diam., terete, soft. Sheaths up to 40 cm, soft, mouth oblique, margins scarious; blades normally reduced to mucro on tip of oblique mouth margin of sheaths, sometimes, esp. when submerged, up to 30 mm, or longer, channelled, pointed. Inflorescence 50-90 mm, pseudolateral multiple spike or small anthelodium; lowest bract 33-55 mm, erect, thick, almost terete, adaxial surface present as narrow strip, apex acute; primary branches c. 8, up to 60 mm, scabrous; each supported by glume-like bract, up to 15 mm, truncate, margins scarious, often fringed; tubular prophyll to c. 10 mm, binerved, sterile, mouth oblique, widely scarious, often fringed; secondary multiple spikes with 2-12 spikes; secondary branches to 17 mm. Spikes 4-10 x 2-5 mm, ovoid; glumes 2.8-4.3 mm, widely cymbiform, mid-nerve extending into smooth or barbed mucro up to 0.7 mm, margins widely scarious, apex rounded, fringed. Perianth bristles 5-7, equalling nut or slightly longer, reddish brown; stamens (2-)3, anthers 1.5-2.7 mm, with reddish brown, barbed connective tip; stigmas 2 or 3. Nut 1.6-2.7 x 1.1-1.8 mm, obovoid, bi-convex or triangular, plano-convex, apiculate, finely reticulate.
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Diagnostic Description

Synonym

Scirpus lacustris L., Sp. Pl. 1: 48. 1753; C.B.Clarke, l.c. 568; R. R. Stewart, l.c. 101; Nyárády in Fl. Rep. Soc. Romania 11: Pl. 114. 1966.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species typically grows in soft silt in water in the margins of lakes, canals, ponds, rivers and streams, it will also persist as completely submerged populations in faster flow over silt beds in rivers.

Systems
  • Freshwater
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Associations

Foodplant / saprobe
superficial, sessile apothecium of Coleosperma lacustre is saprobic on submerged, dead stem of Schoenoplectus lacustris

Foodplant / feeds on
larva of Donacia aquatica feeds on root of Schoenoplectus lacustris

Plant / resting place / among
cocoon of Donacia bicolora may be found among roots of Schoenoplectus lacustris

Foodplant / feeds on
larva of Donacia impressa feeds on root of Schoenoplectus lacustris

Foodplant / saprobe
conidioma of Leptostroma coelomycetous anamorph of Hypohelion scirpinum is saprobic on dead stem of Schoenoplectus lacustris

Foodplant / saprobe
immersed, becoming exposed by lifting of operculum apothecium of Hysterostegiella fenestrata is saprobic on dead stem of Schoenoplectus lacustris
Remarks: season: 8

Plant / resting place / among
subaquatic cocoon of Macroplea appendiculata may be found among roots of Schoenoplectus lacustris

Foodplant / saprobe
colony of Alternaria dematiaceous anamorph of Macrospora scirpicola is saprobic on dead, standing stem of Schoenoplectus lacustris
Remarks: season: 9-5

Foodplant / saprobe
immersed pseudothecium of Massariosphaeria scirpina is saprobic on dead stem of Schoenoplectus lacustris

Foodplant / saprobe
immersed pseudothecium of Metasphaeria mosana is saprobic on rotten, dead stem of Schoenoplectus lacustris

Foodplant / parasite
pustular Myriconium dematiaceous anamorph of Myriosclerotinia scirpicola parasitises live stem (just below inflorescence) of Schoenoplectus lacustris
Remarks: season: summer

Foodplant / saprobe
stalked, occasionally sessile sporodochium of Myrothecium dematiaceous anamorph of Myrothecium cinctum is saprobic on stem leaf of Schoenoplectus lacustris
Remarks: season: 3-5

Foodplant / saprobe
gregarious, immersed pseudothecium of Phaeosphaeria sowerbyi is saprobic on dead stem of Schoenoplectus lacustris

In Great Britain and/or Ireland:
Foodplant / saprobe
amphigenous colony of Arthrinium dematiaceous anamorph of Physalospora scirpi is saprobic on often dry, bleached, dead leaf of Schoenoplectus lacustris
Other: minor host/prey

Plant / resting place / among
cocoon of Plateumaris sericea may be found among root of Schoenoplectus lacustris

Foodplant / spot causer
colony of Pseudocercosporella anamorph of Pseudocercosporella scirpi causes spots on live stem of Schoenoplectus lacustris

Foodplant / parasite
telium of Puccinia scirpi parasitises live Schoenoplectus lacustris

Foodplant / saprobe
scattered, covered, pale brown, pore darker pycnidium of Septoria coelomycetous anamorph of Septoria dolichospora is saprobic on dead, drifted stem of Schoenoplectus lacustris
Remarks: season: 5

Foodplant / saprobe
fruitbody of Sistotrema oblongisporum is saprobic on dead, decayed debris of Schoenoplectus lacustris

Foodplant / saprobe
immersed pycnidium of Stagonospora coelomycetous anamorph of Stagonospora aquatica is saprobic on dead stem of Schoenoplectus lacustris
Remarks: season: 7-9

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Life History and Behavior

Cyclicity

Flower/Fruit

Distribution: All Europe, east to Japan, in the south to Turkey, Caucasus, Iran, Afghanistan, Pakistan and Kashmir.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Schoenoplectus lacustris

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Schoenoplectus lacustris

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 8
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Lansdown, R.V.

Reviewer/s
Garca, N. & Tognelli, M.

Contributor/s
Rhazi, L., Grillas, P., Rhazi, M., Flanagan, D., Knees, S.G., Patzelt, A., Neale, S. & Williams, L.

Justification
This species is assessed as Least Concern as it is widespread with stable or increasing populations and does not face any major threats.
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National NatureServe Conservation Status

United States

Rounded National Status Rank: NNA - Not Applicable

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NatureServe Conservation Status

Rounded Global Status Rank: GNR - Not Yet Ranked

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Population

Population

There is no information available on population trends in this species although it is expected to be stable a global level. It is very abundant through much of its range and is probably increasing in some areas such as the UK (R.V. Lansdown pers. comm.).


Population Trend
Stable
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Threats

Major Threats

There are no known significant past, ongoing or future threats to this species.

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Management

Conservation Actions

Conservation Actions

There are no conservation measures in place and none needed.

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