dcsimg

Description

provided by eFloras
Erect or procumbent annual, stem usually pubescent. Leaflets 8-11 mm long, obovate or obcordate, terminal leaflet petiolulate. Stipules 4-5 mm, broadly ovate. Inflorescence a compact raceme, hemispherical, 8-9 mm long. Pedicel c. 1 mm, shorter than calyx tube. Calyx 1.5-2.0 mm, glabrous. Corolla yellow becoming yellowish brown. Vexillum 3-4 mm long.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 0: 289 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of Pakistan @ eFloras.org
editor
S. I. Ali & M. Qaiser
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eFloras.org
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Distribution

provided by eFloras
Distribution: Throughout Europe, extending to the Caucasus; introduced in Pakistan (Murree hills, Chenab valley).
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 0: 289 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of Pakistan @ eFloras.org
editor
S. I. Ali & M. Qaiser
project
eFloras.org
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eFloras

Derivation of specific name

provided by Flora of Zimbabwe
dubium: uncertain, doubtful
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Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Trifolium dubium Sibth. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=128490
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
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Flora of Zimbabwe

Description

provided by Flora of Zimbabwe
Annual or biennial herb, with prostrate or ascending branches, up to 30 cm long. Leaves 3-foliolate with obovate leaflets; petiolule of apical leaflet longer than those of lateral leaflets. Flowers in axillary heads, up to 20-flowered. Flowers yellow, turning yellowish-brown after flowering. Flowerheads cone-shaped after flowering, due to the deflexed old flowers.
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cc-by-nc
copyright
Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Trifolium dubium Sibth. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=128490
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
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Flora of Zimbabwe

Worldwide distribution

provided by Flora of Zimbabwe
A native of Europe and Southwest Asia.
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cc-by-nc
copyright
Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Trifolium dubium Sibth. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=128490
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
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Flora of Zimbabwe

Physical Description

provided by USDA PLANTS text
Annual, Herbs, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Stems or young twigs sparsely to densely hairy, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules green, triangulate to lanceolate or foliaceous, Stipules persistent, Stipules clasping stem at the base, Stipules adnate to petiole, Leaves compound, Leaves pinnately 3-foliolate, Leaves odd pinnate, Leaflets dentate or denticulate, Leaflets 3, Leaves glabrous or nearly so, Inflorescences racemes, Inflorescences globose heads, capitate or subcapitate, Inflorescence axillary, Inflorescence terminal, Bracteoles present, Flowers zygomorphic, Calyx 5-lobed, Calyx glabrous, Petals separate , Corolla papilionaceous, Petals clawed, Petals orange or yellow, Banner petal narrow or oblanceolate, Wing petals narrow, oblanceolate to oblong, Wing petals auriculate, Wing tips obtuse or rounded, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Style persistent in fruit, Fruit a legume, Fruit unilocular, Fruit indehiscent, Fruit oblong or ellipsoidal, Fruit orbicular to subglobose, Fruit or valves persistent on stem, Fruit enclosed in calyx, Fruit glabrous or glabrate, Fruit 1-seeded, Seeds cordiform, mit-shaped, notched at one end, Seed surface smooth, Seeds olive, brown, or black.
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cc-by-nc-sa-3.0
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Dr. David Bogler
source
Missouri Botanical Garden
source
USDA NRCS NPDC
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USDA PLANTS text

Trifolium dubium

provided by wikipedia EN

Trifolium dubium, the lesser trefoil,[2] suckling clover,[3] little hop clover or lesser hop trefoil, is a flowering plant in the pea and clover family Fabaceae. This species is generally accepted as the primary plant to represent the traditional Irish shamrock.[4]

It is native to Europe, but can be found in many parts of the world as an introduced species.

It is probably an allotetraploid with 2n=32 that arose from the crossing of Trifolium campestre and T. micranthum.[5]

Gallery

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Similar Plants

Lesser hop trefoil, Trifolium dubium, may be confused with other plants that have three leaflets and small yellow flowers, such as large hop trefoil (T. aureum), hop trefoil (T. campestre), black medick (Medicago lupulina), and yellow woodsorrel (Oxalis stricta).

See also

References

  1. ^ "The Plant List: A Working List of All Plant Species". Retrieved 28 June 2015.
  2. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
  3. ^ "Trifolium dubium". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 December 2015.
  4. ^ Cooper, P. Shamrock shortage in Ireland sparks St. Pat's fears. Irish Central.
  5. ^ Ansari, H. A., et al. (2008). Molecular and cytogenetic evidence for an allotetraploid origin of Trifolium dubium (Leguminosae). Chromosoma 117(2):159-67.

"
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wikipedia EN

Trifolium dubium: Brief Summary

provided by wikipedia EN

Trifolium dubium, the lesser trefoil, suckling clover, little hop clover or lesser hop trefoil, is a flowering plant in the pea and clover family Fabaceae. This species is generally accepted as the primary plant to represent the traditional Irish shamrock.

It is native to Europe, but can be found in many parts of the world as an introduced species.

It is probably an allotetraploid with 2n=32 that arose from the crossing of Trifolium campestre and T. micranthum.

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Wikipedia authors and editors
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wikipedia EN