Equisetum myriochaetum (Giant Horsetail) – This prehistoric remnant is among the tallest of the living horsetails. Given optimum conditions, which includes a. Descriptions and articles about Equisetum myriochaetum in the Encyclopedia of Life. Includes Overview; Brief Summary; Comprehensive Description;. Taxonomy. Morphology Equisetum myriochaetum has. Stems – (- ) cm x 7 mm, with 16 – 44 ridges; Branches regularly in whorls. branches

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Equisetum fossil stem, University of Reading archaeology department. Despite the controversies over this term it is still interesting to question why horsetails appear to have changed relatively little since the carboniferous period: Fossil evidence shows that they were a dominant part of the flora during equisetjm carboniferous period both in terms of species number and size [2]. By using this site, you agree to the Terms of Use and Privacy Policy. Today, however, they have been reduced to mostly small, lanky plants.

One Response to Horse tales: The Drosophila wing somatic mutation and recombination test SMART was applied in the standard version with basal biotransformation activity as well as in a variant version with increased cytochrome Pdependent bioactivation capacity. The horsetails once towered over the landscape, reaching heights of 30 meters or more.

In context at www. Commonly known as scouring rush the horsetails equisefum been used by early pioneers in America as well as desperate campers today to clean pans. More work needs to be done looking at the benefits rather than the mechanisms involved.

Equisetum myriochaetum at San Marcos Growers

They must have a body plan or growth strategy that works well and has allowed them to persist for so long. Most species tend to frequent wet areas, though dry, ,yriochaetum poor soils seem to suit some species just fine.

Found in wet areas of the Neotropics, this species can grow to 7 meters height. Given optimum conditions, which includes a frost free location with ample water and rich soil, this subtropical plant is evergreen and can grow to an astonishing 15 feet tall and in some reported cases to 24 feet although plants attaining this height were likely stems supported by other vegetation. Myriochateum may do so in any reasonable manner, but not in any way that suggests the licensor endorses myriochaetun or your use.


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As well as being found in the Reading University tropical glasshouseEquisetum myriochaetum grows natively in south and Central America between Mexico and Peru [7]. When the spores go from a very high humidity level to a dry environment the sudden change causes the spores to jump up to 1cm which is times the height of a spore.

The horsetails are known for their biomineralisation of silica, earning some the common name of myruochaetum rush. equiwetum

Despite their diminutive appearance, many horsetails are quite hardy and thrive in human disturbance. Though they are not ferns, horsetails are frequently referred to as “fern allies. Under the microscope you can see that each spore has 4 legs or elaters that curl and uncurl in response to changes in mygiochaetum atmospheric water content.

Determining the number of species that exist in the Equisetaceae and how they are related to each other has been difficult because members exhibit a large amount of morphological plasticity and hybridisation occurs frequently.

Either way it is an interesting structure to encounter and well worth studying under some form of magnification. The equisetun silicon content in their stems make them particularly good at scraping off dirt and polishing metal.

File:Equisetum myriochaetum – NBGB – IMG 4322.JPG

Much of the world’s coal deposits are derived from these plants. Horsetails show promise as ground covers for dikes, road cuts, abandoned strip mines and other bare areas. Description Equisetum myriochaetum, the Giant Horsetail This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it.


So-called because of their bristly appearance, the horsetails are an intriguing group of early plants that have existed since the Devonian period [1]. Equisetum giganteum Chad Husby for scale. The phylogenetic grouping of the land plants has been subject to a large amount of change over time and no grouping has gone unchallenged. Retrieved from ” https: If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file.

They thrive in nutrient poor soils and their deep, wide-ranging rhizomes can make control difficult to impossible.

However, Pryer et al. Views View Edit History. Today it tends to be used to describe species that appear relatively unchanged from their ancestors in the fossil record.

Horse tales: all about Equisetum myriochaetum | Tropical Biodiversity

It was reviewed on 2 August by FlickreviewR and was confirmed to be licensed under the terms of the cc-by No statistically significant increase was observed between treated series when compared with a concurrent negative water solvent control series in either assay.

However, this is certainly not why this trait evolved. It also may explain why the horsetails have been so successful. Equisetum myriochaetum, the Giant Horsetail. Equisetum myriochaetum Giant Horsetail – This prehistoric remnant is among the tallest of the living horsetails. The tallest of the extant horestails are the giant horsetail Equisetum giganteum and the Mexican giant horsetail Equisetum myriochaetum of Central and South America.