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Overview

Distribution

National Distribution

Canada

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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© NatureServe

Source: NatureServe

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Physical Description

Morphology

Physical Description

Annuals, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Lea f sheath smooth, glabrous, Leaf sheath hairy, hispid or prickly, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blade auriculate, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blades mostly glabrous, Leaf blades more or less hairy, Leaf blades glaucous, blue-green, or grey, or with white glands, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence single raceme, fascicle or spike, Inflorescence spikelets arranged in a terminal bilateral spike, Flowers bisexual, Spikelets sessile or subsessile, Spikelets dorsally compressed or terete, Inflorescence or spikelets partially hidden in leaf sheaths, subtended by spatheole, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets 3 per node, Spikelets distichously arranged, Spikelets bisexual, Inflorescence disarticulating between nodes or joints of rachis, rachis fragmenting, Spikelets disarticulating below the glumes, Spikelets falling with parts of disarticulating rachis or pedicel, Spikelets closely appressed or embedded in concave portions of axis, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glumes awn-like, elongated or subulate, Glumes awned, awn 1-5 mm or longer, Glume surface hairy, villous or pilose, Glumes 1 nerved, Glumes 3 nerved, Glume margins or apex erose-ciliate, Lemma coriaceous, firmer or thicker in texture than the glumes, Lemma 5-7 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma distinctly awned, more than 2-3 mm, Lemma with 1 awn, Lemma awn 1-2 cm long, Lemma awn 2-4 cm long or longer, Lemma awned from tip, Lemma awn from sinus of bifid apex, Lemma awns straight or curved to base, Lemma margins thin, lying flat, Lemm a straight, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear, Caryopsis hairy at apex.
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Dr. David Bogler

Source: USDA NRCS PLANTS Database

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Description

Annual; culms 5-50 cm high, tufted or solitary, erect or geniculately ascending. Leaf-blades up to 20 cm long, 2-8 mm wide, glabrous or sparsely pubescent. Spike oblong, strongly compressed, 2-7 (-12) cm long, green or tinged with purple; rhachis sparsely ciliate on the margins, fragile. Central spikelet sessile or with a pedicel up to 1.8 mm long; glumes lanceolate, long-awned, up to 26 mm long including the awn, fringed with hairs below; lemma lanceolate, 7-12 mm long, scabrid towards the tip; awn 18-50 torn long, anthers 0.2-1.4 mm long. Lateral spikelets well-developed, male or barren, pedicellate, glumes slightly dissimilar, the inner lanceolate, ciliate below, the outer setaceous, both long-awned, 16-30 mm long including the awn; lemma 7-11 mm long, with an awn 10-40 mm long; rhachilla extension slender or stout.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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Ecology

Associations

In Great Britain and/or Ireland:
Foodplant / parasite
Blumeria graminis parasitises live Hordeum murinum

Foodplant / parasite
uredium of Puccinia graminis ssp. graminicola parasitises live stem of Hordeum murinum

Foodplant / parasite
telium of Puccinia hordei parasitises live stem of Hordeum murinum
Other: minor host/prey

Foodplant / spot causer
linear, long covered by epidermis telium of Puccinia striiformis var. striiformis causes spots on live inflorescence of Hordeum murinum

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Life History and Behavior

Life Expectancy

Annual.

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© Bibliotheca Alexandrina

Source: Bibliotheca Alexandrina - EOL Ar

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Hordeum murinum

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


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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Hordeum murinum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 16
Specimens with Barcodes: 16
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNA - Not Applicable

United States

Rounded National Status Rank: NNA - Not Applicable

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© NatureServe

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NatureServe Conservation Status

Rounded Global Status Rank: GNR - Not Yet Ranked

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Wikipedia

Hordeum murinum

Hordeum murinum, commonly known as wall barley or false barley, is a species of grass.

It can grow to 30 cm in height and its unbranched spikes can reach 10 cm long. It is quite widespread and common. It flowers during May through July in mainly coastal areas. It produces small, dry nutlets and its leaves can be 8 mm wide with short, blunt ligules.

In the United Kingdom it is absent throughout most of Ireland and Scotland but is common in England and Wales.

Subspecies include ssp. leporinum, known as hare barley,[1] mouse barley,[2] and barley grass.[3] It grows in tufts from 10 to 40 centimetres in height.[3][4] It was first published as the full species Hordeum leporinum by Johann Heinrich Friedrich Link in 1834. In 1882 it was redescribed as a subspecies of H. murinum by Giovanni Arcangeli. Today some authorities maintain it at the species level.[3][4] It is native to Europe, northern Africa and temperate Asia, and it is widely naturalised elsewhere.[2] Barley grass is known in Chinese as màiqīng (麦青) and is a common ingredient in the spring snack qingtuan.

References[edit]

  1. ^ "Sorting Hordeum names". Multilingual Multiscript Plant Name Database. Retrieved 2009-01-06. 
  2. ^ a b "Hordeum murinum subsp. leporinum (Link) Arcang.". Germplasm Resources Information Network (GRIN) online database. 
  3. ^ a b c "Hordeum leporinum Link". FloraBase. Department of Environment and Conservation, Government of Western Australia. 
  4. ^ a b New South Wales Flora Online: Hordeum leporinum by Link, Royal Botanic Gardens & Domain Trust, Sydney, Australia.
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