Overview

Distribution

National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: Circumpolar in the north temperate zone extending into the Arctic.

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Physical Description

Morphology

Description

Aerial stems persisting more than a year, unbranched, 6--55 cm; lines of stomates single; ridges 3--12. Sheaths green with black apical band, spreading, 1--6 × 1--5 mm; teeth 3--14, not articulate. Cone apex pointed; spores green, spheric. 2 n =216.
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Diagnostic Description

Stems evergreen, stomata borne in lines, 2 to each furrow. Stems with a central cavity and 5 or more vallecular cavities. Stems 5-12 ridged, teeth of sheaths persistant.

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Ecology

Habitat

Comments: Wet meadows, bogs, alluvial thickets, sandy soil of riverbanks, ditches, lakes, etc.

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Life History and Behavior

Life Cycle

Persistence: PERENNIAL, Short-lived, EVERGREEN

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Reproduction

n=108. Hybridizes with E. hymale and E. laevigatum. On the spores elators act as "springs" expanding and contracting under varying conditions of humidity moving the spores mechanically.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Equisetum variegatum

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


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Statistics of barcoding coverage: Equisetum variegatum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 8
Specimens with Barcodes: 37
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N5 - Secure

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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Relevance to Humans and Ecosystems

Benefits

Economic Uses

Production Methods: Wild-harvested

Comments: Some species of Equisetum have been used as scouring material for cookware - this is due to the presence of silica in the stems and also the ridges in the stems.

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Wikipedia

Equisetum variegatum

Equisetum variegatum (commonly known as variegated horsetail or variegated scouring rush) is a horsetail native to the Northern Hemisphere.

Description[edit]

It is a variable species with several ecotypes, some of which are distinct subspecies. The stems can grow to 40 cm (occasionally 80 cm) in height but are often much smaller. Some forms have prostrate stems that creep along the ground while other forms grow more erect. The stems are dark blue-green, slender and rough to the touch. They may be unbranched or have branches growing from the base. The stem nodes are covered with a sheath that is marked with a black band and has dark teeth with white edges. The stems are tipped with a small cone, 3-4 mm across, which is usually green with a black, bluntly-pointed tip.

Distribution and habitat[edit]

It is found in northern parts of Europe, Asia and North America including Greenland, Iceland and the Faroe Islands. Its range extends south as far as the Pyrenees and Apennines in Europe, Mongolia and Japan in Asia and Connecticut, Wisconsin and Oregon in North America.

It prefers open, lime-rich sites, often those that flood in winter. It occurs in dune slacks, mountain flushes and beside lakes, rivers and canals.

References[edit]

  • Flora of North America. Equisetum variegatum. Accessed 30 July 2008.
  • Hutchinson, G. (1996) Welsh Ferns, National Museums and Galleries of Wales.
  • Page C. N. (1982) The Ferns of Britain and Ireland, Cambridge University Press.
  • Preston, C. D. & Pearman, D. A. (2002) New Atlas of the British and Irish Flora, Oxford University Press.
  • Stace, Clive A. (1997) New Flora of the British Isles, Cambridge University Press.
  • Tutin, T. G. et al. (1964) Flora Europaea, Volume 1. Cambridge University Press.
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