Veratrum

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Veratrum
Veratrum album[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Liliales
Family: Melanthiaceae
Tribe: Melanthieae
Genus: Veratrum
L. 1753
Synonyms[2]
  • Melanthium J.Clayton ex L.
  • Helleborus Gueldenst. 1791, illegitimate homonym not L. 1753 (Ranunculaceae)
  • Leimanthium Willd.
  • Anepsa Raf.
  • Evonyxis Raf.
  • Acelidanthus Trautv. & C.A.Mey.

Veratrum is a genus of flowering plants in the family Melanthiaceae.[3] It occurs in damp habitats across much of temperate and subarctic Europe, Asia, and North America.[2][4][5][6][7]

Veratrum species are vigorous

lilies
.

Ecology

Veratrum species are used as food plants by the

Setaceous Hebrew Character
.

Habitat

False hellebore growing in its natural habitat, in the wet soils with good drainage of mountainous, alpine-tundra/forest transition-areas, such as Turnagain Pass, Alaska. This plant is roughly 5 feet (1.5 meters) tall, but can reach over 6 feet.

Widely distributed in

temperate
Northern Hemisphere, Veratrum species prefer full sunlight and deep, wet soils, and are common in wet mountain meadows, swamps, and near streambanks.

Toxicity

Veratrum plants contain highly toxic

vasopressors for the treatment of hypotension.[9]

The toxic alkaloids are only produced during active growth, and are degraded and metabolized during the winter months. Native Americans harvested their roots for medicinal purposes during their dormant period.

Uses

Salvia dorii to potentiate the effects and reduce the herb's toxicity.[11]

Medical research

During the 1930s Veratrum extracts were investigated in the treatment of high blood pressure in humans. While initial results were promising, many of the patients suffered side effects due to the narrow therapeutic index of these products. Due to their toxicity and the availability of other less toxic drugs, use of Veratrum as a treatment for high blood pressure in humans was discontinued.[9]

Herbal medicine

Veratrum plants are known both in western herbalism and traditional Chinese medicine as toxic herbs to be used with great caution. It is one of the medicinals (Li lu, 藜蘆) cited in Chinese herbal texts as incompatible with many other common herbs because of its potentiating effects. Especially, many root (and root-shaped) herbs, particularly

hai seng, will create and or exacerbate a toxic effect.[12]

The roots of

tinea and scabies, and stop itching.[12] Some herbalists refuse to prescribe li lu internally, citing the extreme difficulty in preparing a safe and effective dosage, and that death has occurred with dosages of as little as 600 milligrams.[12]

Species

Accepted species[2]

See also

References

  1. ^ 1897 illustration from Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
  2. ^ a b c Kew World Checklist of Selected Plant Families
  3. ^ Tropicos, Veratrum L.
  4. ^ Flora of North America, Vol. 26 Page 72, False hellebore, skunk-cabbage, corn-lily, vérâtre, varaire, Veratrum Linnaeus, Sp. Pl. 2: 1044. 1753; Gen. Pl. ed. 5: 468. 1754.
  5. ^ Flora of China Vol. 24 Page 82 藜芦属 li lu shu Veratrum Linnaeus, Sp. Pl. 2: 1044. 1753.
  6. ^ Altervista Flora Italiana, genere Veratrum includes photos and European distribution maps
  7. ^ Biota of North America Program 2013 county distribution maps
  8. ISBN 978-1405332965
    .
  9. ^
    S2CID 42124743
    .
  10. ^ "Teratology Society". [dead link]
  11. ^
    ISBN 0-87842-359-1
  12. ^ a b c Bensky, D., Clavey, S., Stoger, E. (2004). Materia Medica (3rd edition). Seattle: Eastland Press. p. 461.

External links

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