Marrubium vulgare

Marrubium vulgare (white horehound or common horehound) is a flowering plant in the mint family (Lamiaceae), native to Europe, northern Africa, and southwestern and central Asia. It is also widely naturalized in many places, including most of North and South America.

Marrubium vulgare
Marrubium vulgare[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Marrubium
Species:
M. vulgare
Binomial name
Marrubium vulgare

It is a grey-leaved herbaceous perennial plant, and grows to 25–45 centimetres (10–18 in) tall. The leaves are 2–5 cm (0.8–2.0 in) long with a densely crinkled surface, and are covered in downy hairs. The flowers are white, borne in clusters on the upper part of the main stem.

Etymology

The Oxford English Dictionary derives the word horehound from Old English hoar (furry, as in "hoarfrost") and hune (a word of unknown origin designating a class of herbs or plants). The second element was altered by folk etymology. The word "White" is generally used in botanical contexts, to distinguish it from Black Horehound, Ballota nigra, a similar-looking herb.

Uses

Folk medicine
Celsus' De medicina in the Aldine edition of 1528

White horehound has been mentioned in conjunction with use as a folk medicine dating at least back to the 1st century BC, where it appeared as a remedy for respiratory ailments in the treatise De Medicina by Roman encyclopaedist Aulus Cornelius Celsus.[2] The Roman agricultural writer Columella lists it as a remedy for expelling worms in farm animals in his important first-century work On Agriculture.[3] Since then, white horehound has appeared for similar purposes in numerous herbals over the centuries, such as The Herball, or, Generall historie of plantes by John Gerard, and Every Man His Own Doctor: or, The Poor Planter’s Physician.[4]

M. vulgare has been described in monographs of the German Commission E as a treatment for colds, as a digestive, and as a choleretic.[5] It is one of the ingredients of the Ricola throat lozenge.[5]The U.S. Food and Drug Administration does not endorse the plant for use as a drug, but includes it as a safe food additive.[6]

Culinary
A container of horehound candies from Fuzziwig´s Candy Factory

Horehound candy drops are bittersweet hard candies like cough drops made with sugar and an extract of M. vulgare. They are dark-colored, dissolve in the mouth, and have a flavor that has been compared to menthol and root beer. Like other products derived from M. vulgare, they are sometimes used as an unproven folk treatment for coughs and other ailments.[7][8]

M. vulgare is used to make beverages such as horehound beer (similar to root beer), horehound herbal tea (similar to the Maghrebi mint tea), and the rock and rye cocktail.[9]

As an invasive weed

Horehound was introduced to southern Australia in the 19th century as a medicinal herb. It became a weed of native grasslands and pastures where it was introduced with settlers' livestock and was first declared under noxious weeds legislation. It now appears to have reached its full potential distribution.

In New Zealand, efforts are being made to control its spread with biocontrol measures using the horehound clearwing moth (Chamaesphecia mysiniformis) and the horehound plume moth (Wheeleria spilodactylus), which could eat their way through many plants.[10][11]

Horehound is usually found in disturbed and overgrazed areas. It is highly unpalatable to livestock, so livestock eat other plants around it, a process that favors the persistence and spread of the weed. It may persist in native vegetation that has been grazed.

As biocontrol

Marrubium vulgare is also used as a natural grasshopper repellent in agriculture.

In astrology

According to 14th century English poet John Gower, in Book 7 of his Confessio Amantis, this plant was the herb of the fourth star of Nectanebus' astrology, Capella. Gower uses the older name, Alhaiot (VII:1338).

  • Wild horehound
    Wild horehound
  • Flowers
    Flowers
  • Foliage of young plants
    Foliage of young plants
  • Horehound bug (Agonoscelis rutila), an insect that feeds on the plant
    Horehound bug (Agonoscelis rutila), an insect that feeds on the plant
  • Leaves (detail)
    Leaves (detail)

See also

References
  1. Franz Eugen Köhler, 1897, Köhler's Medizinal-Pflanzen
  2. "LacusCurtius • Celsus – On Medicine – Book IV". Penelope.uchicago.edu. Retrieved 21 January 2018.
  3. "Full text of "On agriculture, with a recension of the text and an English translation by Harrison Boyd Ash"". Archive.org. Retrieved 21 January 2018.
  4. John Tennent. "Every Man His Own Doctor: OR, The Poor Planter's Physician, ca. 1727" (PDF). Nationalhumanitiescenter.org. Retrieved 21 January 2018.
  5. Maryann Readal (6 September 2021). "Horehound – Herb of the Month". The Herb Society of America. Retrieved 26 October 2023.
  6. "Horehound (hoarhound); Under 'H' in Food Additive Status List". US Food and Drug Administration. 26 September 2023. Retrieved 26 October 2023.
  7. Vandersteen, Eric (18 March 2019). Horehounds Are the Old-School Candy You're Missing Out On. Saveur.
  8. Sharrock, Jane (2004-08-03). Who Wants Candy?. Penguin. p. 50. ISBN 9781440625534.
  9. "Rock & Rye - Imbibe Magazine". Imbibemagazine.com. Retrieved 21 January 2018.
  10. "Moths may be the key to controlling spreading infestations of horehound". Stuff. 9 May 2019. Retrieved 9 May 2019.
  11. "Horehound". Manaaki Whenua – Landcare Research. Retrieved 20 June 2022.

Further reading
Wikimedia Commons has media related to Marrubium vulgare.
  • Everist, D.L. (1981) Poisonous Plants of Australia. 3rd ed. (Angus & Robertson: Sydney). ISBN 0-207-14228-9
  • Parsons, W. & Cuthbertson, E. (2001) Noxious Weeds of Australia. 2nd ed. (CSIRO Publishing: Collingwood). ISBN 0-643-06514-8
Wikispecies has information related to Marrubium vulgare.
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