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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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The Equisetaceae comprise one remaining genus, Equisetum which is considered to have 2 sub-genera: Much of the world’s coal deposits are derived from these plants. Certainly an impressive site to see.

Stomata are in bands of Found in wet areas of the Neotropics, this species can grow to 7 meters height. Equisetum fossil stem, University of Reading archaeology department. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Hypoglycemic effect of Equisetum myriochaetum aerial parts on type 2 diabetic patients.

The phylogenetic grouping of the land plants has been subject to a large amount of change over time and no grouping has gone unchallenged. 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.

This page was last edited on 31 Decemberat 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. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Historically, the ferns and horsetails were believed to be separate lineages.


Equisetum have superficial stomata and branched stems [5]. Equisetum myriochaetum can easily be mistaken for some other species of horsetail within the equisetm sub-genus in particular Equisetum giganteum and Equisetum xylochaetum [5][7].

The Drosophila wing somatic mutation and recombination test Qeuisetum was applied in the standard version with basal biotransformation activity as well as in a variant version with increased cytochrome Pdependent bioactivation capacity. They reproduce sexually by the production of spores but also asexually by rooting rhizomes or stem pieces [7]. The tallest of the extant horestails are the giant horsetail Equisetum giganteum and myriochaftum Mexican giant horsetail Equisetum myriochaetum of Central and South America.

File:Equisetum myriochaetum, the Giant Horsetail ().jpg – Wikimedia Commons

Equisetum myriochaetum is a Mexican plant used in folk medicine to treat kidney diseases and type 2 diabetes mellitus. The wquisetum of exposure concentrations for these genotoxicity experiments were between 0. In this study, phytotherapeutic extracts from Equisetum myriochaetum were investigated for genotoxicity in the in vivo wing spot test in Drosophila melanogaster and in the in vitro human micronucleus test. Fossil evidence shows that they were a dominant part of the flora during the carboniferous period both in terms of species number and size [2].


File:Equisetum myriochaetum – NBGB – IMG 4322.JPG

By using this site, you agree to the Terms of Use and Privacy Policy. Despite their diminutive appearance, many horsetails are quite hardy and thrive in human disturbance. Mexico North America Evergreen: It is likely that the silicates have something to do with structural support as well as physical protection against pathogens.

Dick Culbert from Gibsons, B. They were some of the first plants on land and it is likely that some will be here to stay, even if we go the way of the Devonian forests. Love them or hate them, they have stood the test of time. As new techniques and data become available scientists have changed their mind about how the early vascular plants, which include the ferns, horsetails and lycopsids are related to each other.

So what about keeping you warm in winter? The following other wikis use this file: They thrive in nutrient poor soils and their deep, wide-ranging rhizomes can make control difficult equisteum impossible.

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.

Equisetum giganteum Chad Husby for scale.