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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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Global Distribution

Europe, southwest Asia, widely introduced as a weed in temperate regions.

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Jiangsu, Sichuan [Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Turkmenistan, Uzbekistan; N Africa, SW Asia, Europe; introduced in America and Australia].
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Physical Description

Morphology

Physical Description

Annuals, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems solitary, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Ste ms 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 closed, Leaf sheath hairy, hispid or prickly, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blades more or less hairy, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence lax, widely spreading, branches drooping, pendulous, Inflorescence with 2-10 branches, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets laterally compressed, Spikelets with 3-7 florets, Spikelets with 8-40 florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikele ts bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes distinctly unequal, Glumes shorter than adjacent lemma, Glumes 1 nerved, Glumes 3 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma 5-7 nerved, Lemma glabrous, Lemma apex dentate, 2-fid, 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 awn subapical or dorsal, Lemma awns straight or curved to base, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea membranous, hyaline, Palea shorter than lemma, Palea 2 nerved or 2 keeled, Palea keels winged, scabrous, or ciliate, 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 simple or loosely tufted, erect or geniculately ascending, 50–100 cm tall, ca. 5 mm in diam., glabrous. Leaf sheaths pubescent; leaf blades soft, 5–20 cm × 4–10 mm, pubescent; ligule 2–4 mm. Panicle lax, open, 10–20 × 7–12 cm, nodding; branches spreading, up to 10 cm, each bearing 1–3 nodding spikelets. Spikelets oblong, wedge-shaped when mature, 20–35 × 4–8 mm, florets 5–9; lower glume subulate, 8–14 mm, 1-veined, upper glume oblong-lanceolate, 10–20 mm, 3-veined; lemmas lanceolate, 15–20 × 2–4 mm in side view, 7-veined, margins white membranous, apex 2-toothed, teeth 1–2 mm, awned from sinus; awn 15–30 mm, as long as or longer than lemma body, slender, straight; palea subequal to lemma, keels sparsely ciliate. Stamens 3, anthers ca. 1 mm. Fl. May–Jun. 2n = 14.
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Diagnostic Description

Synonym

Anisantha sterilis (Linnaeus) Nevski; Festuca sterilis (Linnaeus) Jessen; Genea sterilis (Linnaeus) Dumortier; Sche-donorus sterilis (Linnaeus) Fries; Zerna sterilis (Linnaeus) Panzer.
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Ecology

Habitat

Unconfirmed in Egypt.

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Wastelands; 600–3200 m.
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Associations

In Great Britain and/or Ireland:
Foodplant / parasite
linear telium of Puccinia graminis f.sp. secalis parasitises live sheath of Anisantha sterilis

Foodplant / parasite
mostly epiphyllous, scattered uredium of Puccinia recondita parasitises live leaf of Anisantha sterilis

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

Plant / resting place / on
female micropter of Rhipidothrips brunneus may be found on live Anisantha sterilis
Remarks: season: 6-7

Foodplant / parasite
sorus of Ustilago bullata parasitises live spikelet of Anisantha sterilis

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Life History and Behavior

Life Expectancy

Annual.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Anisantha sterilis

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


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Statistics of barcoding coverage: Anisantha sterilis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 6
Species With Barcodes: 1
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Barcode data: Bromus sterilis

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


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Statistics of barcoding coverage: Bromus sterilis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 11
Specimens with Barcodes: 13
Species With Barcodes: 1
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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 Conservation Status

Rounded Global Status Rank: GNR - Not Yet Ranked

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Wikipedia

Bromus sterilis

Bromus sterilis is an annual or biennial species of bromegrass known as barren brome, poverty brome, and sterile brome.

Range[edit]

It can be found between sea level and 365 metres, along roadsides, hedge bottoms, and is a common weed of waste ground and gardens.

This grass is native to:

Identification[edit]

This is an annual or biennial grass ranging from about 20 to 90 centimeters in maximum height. It has a small leaf blade and its inflorescence is spreading, with the lower parts drooping more than the upper. The spikelet is up to 3 centimeters long.

The leaves are rough and hairy, green to purplish in colour. The ligule is pointed,toothed, 2 to 4 mm long.[5]

Ligule is pointed

The panicles are loose, open and nodding. The spikelets are 4 to 6 cm long, with awns, producing 4 to 10 flowers.[6]

Invasive plant species[edit]

It is well known in many parts of the world where it has an introduced species. It is a noxious weed on the eastern and western sides of North America, an Invasive species in California.

References[edit]

  1. ^ a b  Species was first described and published in Species Plantarum 1: 77. 1753. "Plant Name Details for Bromus sterilis". IPNI. Retrieved August 9, 2010. "basionym of: Zerna sterilis" 
  2. ^ a b c GRIN (May 29, 2007). "Bromus sterilis information from NPGS/GRIN". Taxonomy for Plants. National Germplasm Resources Laboratory, Beltsville, Maryland: USDA, ARS, National Genetic Resources Program. Retrieved August 9, 2010. "Synonyms: Anisantha sterilis" 
  3. ^  Anisantha sterilis was published in Trudy Sredne-Aziatskogo Gosudarstvennogo Universiteta. Serija 8b. Botanika. Acta Universitatis Asiae Mediae. Botanica, Ser. 8b, Bot. 17:20. 1934. Tashkent. GRIN (May 29, 2007). "Anisantha sterilis information from NPGS/GRIN". Taxonomy for Plants. National Germplasm Resources Laboratory, Beltsville, Maryland: USDA, ARS, National Genetic Resources Program. Retrieved August 9, 2010. 
  4. ^  Zerna sterilis was published in Denkschriften der Koniglich Akademie der Wissenschaften zu München, 4: 297. 1814. Munich. "Plant Name Details for Zerna sterilis". IPNI. Retrieved August 9, 2010. "Remarks: Specific epithet not associated with genus name." 
  5. ^ BSBI Description retrieved 10 December 2010.
  6. ^ Grasses by C E Hubbard, 1978, published by Penguin books
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Notes

Comments

This species is a widespread weed, adventive in most temperate regions of the world.
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