Equisetum palustre

Botanical Name : Equisetum palustre
Family: Equisetaceae
Genus: Equisetum
Species: E. palustre
Kingdom: Plantae
Division: Pteridophyta
Class: Equisetopsida
Order: Equisetales

Common Names ; Marsh horsetail or the Humpback

Habitat : Equisetum palustre is native to temperate regions of Europe, including Britain, N. America and Asia. It is widespread in cooler regions of North America and Eurasia. It grows on bogs, fens, marshes and wet heaths, woods and meadows throughout Britain, ascending to 900 metres.
Description:
Equisetum palustre is a perennial cryptophyte, growing between 10 to 50 centimeters (4″ to 20″), in rare cases up to one meter (3′). Its fertile shoots, which carry ears, are evergreen and shaped like the sterile shoots. The rough, furrowed stem is one to three mm in diameter with usually eight to ten ribs, in rare cases, four to 12. It contains whorled branches. The tight-fitting sheaths end in four to 12 teeth. The lower sheaths are dark brown and much shorter than the sheaths of the main shoot. The central and vallecular canals are about the same size, but the carinal channels are much smaller. The central channels measure about one sixth of the diameter of the stem.

Equisetum palustre is green from spring to autumn and grows spores from June to September. It grows primarily in nutrient-rich wet meadows.

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The spores are spread by the wind (anemochory) and have four long ribbon-like structures attached to them. They sit on strobili which are rounded on the top. Marsh Horsetails often form subterranean runners and tubers, with which they also can proliferate vegetatively.

Cultivation:
We have no information on the needs of this species but, judging by the plant’s native habitat, it is likely to require a moist to wet soil in a sunny position. A very cold-hardy species tolerating temperatures down to about -30°c. Plants have a deep and penetrating root system and can be invasive. If grown in the garden they are best kept in bounds by planting them in a large container which can be sunk into the ground.

Propagation:
Spores – best collected as soon as they are ripe in the spring and surface-sown immediately on a sterile compost. Keep moist and pot up as soon as the plants are large enough to handle. Very difficult. Division. The plants usually spread very freely when well sited and should not really need any assistance.
Medicinl Uses:
Horsetails have an unusual chemistry compared to most other plants. They are rich in silica, contain several alkaloids (including nicotine) and various minerals. Horsetail is very astringent and makes an excellent clotting agent, staunching wounds, stopping nosebleeds and reducing the coughing up of blood. It helps speed the repair of damaged connective tissue, improving its strength and elasticity. An infusion or decoction of the plants has been used in the treatment of constipation, stomach and bowel complaints.

Known Hazards: Large quantities of the plant can be toxic. This is because it contains the enzyme thiaminase, a substance that can rob the body of the vitamin B complex. In small quantities this enzyme will do no harm to people eating an adequate diet that is rich in vitamin B, though large quantities can cause severe health problems. The enzyme is destroyed by heat or thorough drying, so cooking the plant will remove the thiaminase. The plant also contains equisetic acid – see the notes on medicinal uses for more information.

Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with   your own health care provider.

Resources:
https://en.wikipedia.org/wiki/Equisetum_palustre
http://www.pfaf.org/user/Plant.aspx?LatinName=Equisetum+palustre

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