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Overview

Distribution

Range Description

C. microglochin has a curious distribution; it occurs from Scandinavia south to France and Italy east through Russia an the Caucasus to Mongolia, China and the eastern seaboard of Russia. It also occurs throughout much of northern North America and South America (The Board of Trustees of the Royal Botanic Garden, Kew 2013).
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National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: Newfoundland to Alaska, south to Connecticut, Pennsylvania, Minnesota, and Washington. Disjunct populations occur in Montana, Wyoming, and Colorado (Hermann 1970; Evert et al. 1986; Fertig and Jones 1992).

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Kashmir, Nepal, arctic-alpine N. Hemisphere.
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Distribution: Circum-boreal species with gap in Siberia; C. European mts., Caucasus, NW Iran; C Asian mts. from Dzungarskiy Alatau southwards and from C Afghanistan, Pakistan, Kashmir eastwards to Nepal.
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Physical Description

Morphology

Elevation Range

4100-4600 m
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Description

Erect perennial, 7-30 cm. Rhizome with short stolons. Stem terete, smooth. Leaves to half of stem length; sheaths 5-25 mm, dark brown, frequently with red-brown flecks, margin of scarious side straight or slightly concave; ligule c. 0.5 mm, arch almost straight; blades 0.4-0.8 mm wide, terete with groove on adaxial side, smooth, apex obtuse. Inflorescence 6-10 mm, a single androgynous spike. Bracts 0. Male part of inflorescence 4-6 mm, with less than 10 flowers; male glumes c. 3.5 mm, caducous, cymbiform, truncate, light-brown. Female part of inflorescence with 4-11 flowers; female glumes 2-2.5 x 1.1-1.5 mm, caducous, widely oblong, apex rounded, margins scarious, brown; utricles 3.9-5 x 0.7-0.9 mm, with a suberous c. 0.5 mm stipe, finally reflexed, long fusiform, terete, smooth, rachilla extends 5 mm through ostiole, beak c. 1.5 mm, cylindrical, ostiole margins scarious. Stigmas 3. Nut 2.1-2.3 x 0.5-0.6 mm, cylindrical, very finely rugulose, greenish brown.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
C. microglochin occurs in moist, calcareous, often peaty ground in open barrens, tundra (often very wet or flooded), fens, seeps over shallow bedrock, boggy subalpine meadows, sandy or gravelly river flats and clay or silt at lakeshores and seasides, at elevations of 0–3,700 m asl (Ball et al. 2003). In the UK, this species is a member of a distinctive high-level facies, of Carex viridula subsp. oedocarpa - Saxifraga aizoides mire in which other alpine species occur such as C. atrofusca, Juncus biglumis, J. castaneus, together with Carex dioica, Thalictrum alpinum, Aneura pinguis, Blindia acuta, Campylium stellatum and Scorpidium revolvens in gently sloping stony, micaceous flushes where the total plant cover is usually less than 50% (Jermy et al. 2007).

Systems
  • Terrestrial
  • Freshwater
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Wet meadows, along streams etc.
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Life History and Behavior

Cyclicity

Flower/Fruit

Fl. Per.: June- August.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Carex microglochin

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


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Statistics of barcoding coverage: Carex microglochin

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 7
Specimens with Barcodes: 7
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
2014

Assessor/s
Lansdown, R.V.

Reviewer/s
Smith, K.

Contributor/s

Justification
In spite of local declines and extinction, overall this species is widespread with stable populations and does not face any major threats. It is therefore classed as Least Concern.

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National NatureServe Conservation Status

Canada

Rounded National Status Rank: N4 - Apparently Secure

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Population

Population
C. microglochin is considered extinct in Germany and Poland (The Board of Trustees of the Royal Botanic Garden, Kew 2013) and is declining in Finland (Rassi et al. 2010), the UK (Cheffings and Farrell 2005) and Switzerland (Landolt 1991). Outside these areas populations appear stable.

Population Trend
Stable
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Threats

Major Threats
The reason for local declines and extinction is not clear, but it may be related to atmospheric deposition of nutrients. Outside of northern Europe, there are no known past, ongoing, or future threats to this species.
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Management

Conservation Actions

Conservation Actions
C. microglochin is listed as Endangered (A1ac, B1+2abcde) in Finland (Rassi et al. 2010), Vulnerable (D2) in the UK (Cheffings and Farrell 2005) and Vulnerable in Switzerland (Landolt 1991).

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