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Washerwoman

Alternanthera caracasana Kunth

Description

provided by eFloras
Herbs, perennial, 1-5 dm. Stems prostrate to procumbent, villous, glabrate. Leaves sessile; blade rhombic-ovate, oval, or obovate, usually longer than broad, 0.5-2.5 × 0.3-1.5 cm, apex rounded, apiculate, sparsely villous, glabrate. Inflorescences axillary, sessile; heads white to stramineous, ovoid, 0.5-0.8 × 0.4-0.6 cm; bracts shorter than tepals, apex long-attenuate, aristate. Flowers: tepals dimorphic, whitish to stramineous, lanceolate, 3-5 mm, apex acuminate, spinose tipped, densely villous, hairs barbed; stamens 5; pseudostaminodes triangular or subulate, shorter than filaments, margins usually entire, rarely dentate. Utricles included within tepals, brown, ovoid-orbicular, 1.5 mm, apex slightly truncate. Seeds ovate-orbiculate, 1-1.5 mm.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 4: 448, 449, 451 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Distribution

provided by eFloras
introduced; Ala., Ariz., Ark., Calif., Fla., Ga., La., Md., Miss., N.Mex., N.C., Okla., S.C., Tex.; Mexico; Central America; South America.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 4: 448, 449, 451 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Flowering/Fruiting

provided by eFloras
Flowering summer-fall.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 4: 448, 449, 451 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Habitat

provided by eFloras
Gravel, sand bars, sidewalks; 0-2000m.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 4: 448, 449, 451 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Synonym

provided by eFloras
Alternanthera peploides (Humboldt & Bonpland ex Schultes) Urban
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 4: 448, 449, 451 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Derivation of specific name

provided by Flora of Zimbabwe
caracasana: of Caracas, Venezuela
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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). Alternanthera caracasana Kunth Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=122520
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
partner site
Flora of Zimbabwe

Description

provided by Flora of Zimbabwe
Much-branched, prostrate, mat-forming perennial with a vertical rootstock but also rooting at the lower nodes. Flowers off-white and hairy.
license
cc-by-nc
copyright
Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Alternanthera caracasana Kunth Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=122520
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
partner site
Flora of Zimbabwe

Frequency

provided by Flora of Zimbabwe
Frequent
license
cc-by-nc
copyright
Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Alternanthera caracasana Kunth Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=122520
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
partner site
Flora of Zimbabwe

Worldwide distribution

provided by Flora of Zimbabwe
Native of tropical America; widespread introduction in tropical Africa
license
cc-by-nc
copyright
Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Alternanthera caracasana Kunth Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=122520
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
partner site
Flora of Zimbabwe

Alternanthera caracasana

provided by wikipedia EN

Alternanthera caracasana is a species of flowering plant in the family Amaranthaceae known by the common names khakiweed, washerwoman and mat chaff flower. It is native to Central and South America but is well-known elsewhere as a noxious weed. It is naturalized in some areas and invasive in others and can be found across the southern half of the United States, Australia (where many people are unaware it is not native), Spain and parts of Africa. The plant has long, prostrate stems covered in small leaves which vary in shape from diamond to rounded. It grows from a rhizome and often roots from its lower nodes. Each spike inflorescence is under a centimeter wide and is covered in tiny stiff white flowers. This is a tough weed of lots, roads, railroad tracks, cleared areas, and other places that are rough, sandy, and often well-traveled.

It is often confused with khaki burr, which it is related to, but it sports masses of sharp V-shaped prickles that are easily detached and embed themselves in the feet and skin.

Gallery

References

  • Everitt, J. H.; Lonard, R. L.; Little, C. R. (2007). Weeds in South Texas and Northern Mexico. Lubbock: Texas Tech University Press. ISBN 0-89672-614-2

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Wikipedia authors and editors
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wikipedia EN

Alternanthera caracasana: Brief Summary

provided by wikipedia EN

Alternanthera caracasana is a species of flowering plant in the family Amaranthaceae known by the common names khakiweed, washerwoman and mat chaff flower. It is native to Central and South America but is well-known elsewhere as a noxious weed. It is naturalized in some areas and invasive in others and can be found across the southern half of the United States, Australia (where many people are unaware it is not native), Spain and parts of Africa. The plant has long, prostrate stems covered in small leaves which vary in shape from diamond to rounded. It grows from a rhizome and often roots from its lower nodes. Each spike inflorescence is under a centimeter wide and is covered in tiny stiff white flowers. This is a tough weed of lots, roads, railroad tracks, cleared areas, and other places that are rough, sandy, and often well-traveled.

It is often confused with khaki burr, which it is related to, but it sports masses of sharp V-shaped prickles that are easily detached and embed themselves in the feet and skin.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
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wikipedia EN