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 myriochaetum is a Mexican plant used in folk medicine to treat kidney diseases and type 2 diabetes mellitus.

Equisetum myriochaetum at San Marcos Growers

Adobe Photoshop CS3 Windows. 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.

No statistically significant increase was observed between treated series when compared with a concurrent negative water solvent control series in either assay. In myriochaeutm 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. From Wikimedia Commons, the free media repository. Either way it is an interesting structure to encounter and well worth studying under some form of magnification.

The high silicon content in their stems make them particularly good at scraping off dirt and polishing metal.

Horse tales: all about Equisetum myriochaetum | Tropical Biodiversity

Today it is generally agreed that there are 15 different species [4]. The horsetails are known for their biomineralisation of silica, earning some the common name of “scouring rush. Hippochaetum is distinguishable from Equisetum by its sunken stomata and stems that are generally unbranched. 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.


File:Equisetum myriochaetum, the Giant Horsetail (11310017733).jpg

Like all horsetails, Equisetum myriochaetum grows well in equisefum fertile areas and they are often found growing in tropical forests alongside streams and swamps. Note, however, that horsetails cause a serious poisoning, called equisetosis, in horses.

The tallest of the extant horestails are the giant horsetail Equisetum giganteum and the Mexican giant horsetail Equisetum myriochaetum of Central and South America. Along with other early plants such as ferns, the horsetails formed the forests that the dinosaurs inhabited. However, the horsetails that grow today look very similar to the ones we see in the fossil record. Under the microscope you can see that each spore has 4 legs or elaters that curl and uncurl in response to changes in the atmospheric water content.

This file is licensed under the Creative Commons Attribution 2. Spores are produced from a cone-like structure at the top of the stem called a stobilus.

The phylogenetic grouping of the land plants has been subject to a large amount of change over time and no grouping has gone unchallenged. Much of the world’s coal deposits are derived from these plants. This relatively small jump is enough to allow spores on the ground to be caught by the wind enabling further dispersal [9].


Plant in full sun to light shade in a rich soil and keep moist. Equisetum have superficial stomata and branched stems [5]. Today, however, they have been reduced to mostly small, lanky plants.

Though they are not ferns, horsetails are frequently referred to as “fern allies. It also may explain why the horsetails have been so successful. About alieyres Budding botanist at the University of Reading. Found in wet areas of the Neotropics, this species can grow to 7 meters height.

Stomata are in bands of Habit and Cultural Information. For this reason, horsetails such as E. Could it be a characteristic that has allowed the horsetails to survive for so long and myriochaetu, such a wide range? 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. There is something to be said for these little plants.

The human micronucleus test in vitro was performed with cultured lymphocytes obtained from four healthy donors.