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Herb : Screw tree

(Botanical name: Helleborus niger)

Classification

History

Helleborus niger is evergreen flowering plant but poisonous in nature belongs to the Ranunculaceae family.

Helleborus is perennial flowering plant that and has numerous species distributed in various parts of the world. Helleborus niger is further subdivided i.e. H. niger and H. macranthus.

H. niger is usually found in mountainous regions of Switzerland, Austria, Germany, Slovenia and northern Italy.

While H. macranthus is found only in the areas of northern Italy and adjoining parts of Slovenia.

Plant Description

Helleborus niger is evergreen plant which is 9-12 inches tall with dark leathery leaves coming out of stem.

The flowers are large borne out of small stem which is usually white or pink.

Cultivation

H. niger is horticulture favourite and generally cultivated in cottage gardens for its beautiful flowers.

Screw tree prefers moist-humid rich and well drained alkaline soil and mottled shade to grow best.

Parts Used

Dried rhizome.

Constituents

Glucosides named Helleborin and helleborcin, resin, fat and starch.

Uses

Screw tree possess highly purgative, anthelmintic and narcotic actions.

H. niger is highly poisonous in nature, so it must be used carefully as formerly it is bee used in the treatment of leprosy and nervous disorders like hysteria.

In homeopathy screw tree roots are used which makes a remedy for headaches, psychic disorders, spasms and enteritis.

Due to its toxicity it is been used against lice, parasites and fleas.

Names