Overview

Distribution

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Alta., B.C., N.W.T., Yukon; Alaska, Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.; Asia (Russian Far East).
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Physical Description

Morphology

Description

Plants perennial, forming clumps, from slender rhizomes. Stems erect or trailing, branched, square, weak, to 25(-35) cm, glabrous or pilose, never papillate. Leaves sessile or subsessile; blade ovate to elliptic, rarely oblong, widest proximal to middle, 5-25 mm, thin, base round, margins entire, apex acute, glabrous or rarely ciliate. Inflorescences terminal, 1-5-flowered cymes; bracts foliaceous. Pedicels ascending, not reflexed, 5-25(-50) mm, glabrous. Flowers 3-5 mm; sepals 5, obscurely veined, ovate, 2-2.5 mm (rarely 3.5 in fruit), margins broad, scarious, apex broadly acute, glabrous; petals absent or 1-5, 1-1.5 mm, shorter than sepals, blade apex deeply lobed; stamens 5; styles 3, usually curved, 0.4-0.9 mm. Capsules green, semitransparent, globose to broadly ovoid, 3-5 mm, to 1.5 times as long as broad, longer than sepals, apex obtuse, opening by 3 valves; carpophore absent. Seeds brown, ovate, 0.5-0.9 mm, smooth or shallowly tuberculate. 2n = 26.
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Diagnostic Description

Synonym

Arenaria calycantha Ledebour, Mém. Acad. Imp. Sci. St. Pétersbourg Hist. Acad. 5: 534. 1815; Alsine calycantha (Ledebour) Rydberg; A. simcoei Howell; Stellaria borealis Bigelow var. simcoei (Howell) Fernald; S. calycantha var. simcoei (Howell) Fernald; S. simcoei (Howell) C. L. Hitchcock
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Ecology

Habitat

Alpine slopes, meadows, shores of lakes and streams; 0-3700m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering summer.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Stellaria calycantha

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 4
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

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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Wikipedia

Stellaria calycantha

Stellaria calycantha is a species of flowering plant in the pink family known by the common name northern starwort. It is native to western North America from Alaska and northwestern Canada to California and New Mexico, as well as eastern Russia. It occurs in subalpine and alpine climates, in many types of moist, shady habitat. It is a rhizomatous perennial herb producing a prostrate to erect stem up to 25 centimeters long, taking a clumpy form. The thin oval leaves have smooth edges and pointed tips, and measure up to 2.5 centimeters in length. The inflorescence bears one or more flowers, each on a long pedicel. Each flower has five pointed green sepals, and some flowers have up to five deeply lobed white petals.

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