Overview

Distribution

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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Greenland; Alta., B.C., Man., Nfld. and Labr., N.W.T., Ont., Que., Yukon; Alaska, Colo., Mont., S.Dak., Utah, Wyo.; Eurasia.
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Physical Description

Morphology

Description

Rhizomes brown or black, scaly. Culms 4–20 cm. Leaf blades channeled, tips soon becoming brown and dry, 2–12 cm × 1–3 mm. Spike with 3–15 pistillate flowers, 8–20 × 1.5–4 mm. Pistillate scales brown, margins hyaline, midvein paler, circular-ovate 2.5–4 × 1.4–2.6 mm, apex obtuse, often concealing perigynia. Staminate scales brown, margins hyaline, midvein paler, oblong-lanceolate to obovate, 2.5–3.5 × 1.4–2 mm, apex acute or obtuse. Perigynia 2.5–4 × 1–2 mm. Achenes oblong-obovoid, 2.2–2.5 × 1.5 mm. 2n = 52.
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Diagnostic Description

Synonym

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Ecology

Habitat

Dry to mesic heaths, meadows, rock outcrops, talus slopes; 0–2000m.
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Associations

Foodplant / saprobe
immersed, hyphally linked pseudothecium of Mycosphaerella perexigua is saprobic on dead Carex rupestris
Remarks: season: 7

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Life History and Behavior

Cyclicity

Flowering/Fruiting

Fruiting late spring–summer.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Carex rupestris

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 rupestris

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 47
Specimens with Barcodes: 61
Species With Barcodes: 1
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Conservation

Conservation Status

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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Notes

Comments

Carex rupestris can be confused with C. obtusata if collected without the rhizomes. They may be distinguished by the presence of reddish dots on the sheath fronts of the culm leaves in C. obtusata and the absence of dots in C. rupestris.
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