Ballota nigra

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Ballota nigra
Ballota nigra 2005.06.19 10.13.06-p6190007.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Ballota
Species:
B. nigra
Binomial name
Ballota nigra
L.
Ballota nigra rangemap.png
Range of Ballota nigra
Synonyms [1]
  • Marrubium nigrum(L.) Garsault
  • Ballota foetidaLam.
  • Ballota sordidaSalisb.
  • Stachys ballotaKuntze
  • Ballota velutinaPosp.
  • Ballota sepiumPaulet ex Pers.
  • Ballota urticifoliaOrtmann ex Nestl.
  • Ballota aristataRchb.
  • Ballota ampliataWilld. ex Steud.
  • Ballota hirtaSteud.
  • Ballota rubraSchrad. ex Steud.
  • Ballota bracteosaBall
  • Ballota submitis(Borbás) Borbás

Ballota nigra, black horehound, is a perennial herb of the family Lamiaceae. It is native to the Mediterranean region and to central Asia and it can be found throughout Europe. It is also naturalized in Argentina, New Zealand, and the Eastern United States. [1] [2] [3] [4] [5] It blooms in the Northern Hemisphere from May to August.

Contents

Description

Ballota nigra has a very strong characteristic smell reminiscent of mold or humidity, and can be recognized by its clusters of hairy, reddish-purple flowers. It can grow up to 3 feet in height.

Morphology

Stem and root

It has herbaceous ascending stems, wooden and branched at bottom, covered by down folded hairs. The plant has a taproot system.

Leaves

Leaves are opposite and decussate, and range from oval-lanceolate to heart-shaped, with crenate or dentate border. Leaves, dark green and usually pubescent, measure 3–8 cm per 2–6 cm, and have 1–3 cm petiole. Upper face is wrinkled, with a net-like vein pattern.

Flowers

Flowers are organized in verticillasters, subspherical to about one-sided, with 15 to 30 flowers. Each verticillaster consist of two condensed dichasial cymes at axils of normal leaves.

Flower has an actinomorphic calyx (length 9–10 mm, width 7 mm), made up by five sepals fused together in a tube with five teeths; and a labiate corolla of 12–13 mm, ranging from pink to pale purple to withish. The corolla consist of a tube of about 6 mm and two lips; the upper one slightly concave (like a hood) and externally hairy; the lower one glabrous, with two minor lateral lobes and a major central bifid lobe. There are four didynamous stamens, running parallel under the upper lip, with glabrous filaments and yellow anthers. Ovary is superior, with a single white style and a 2-parted stigma.

Below the calyx there are five filiform bracts, 8 mm long.

Black horehound flowers Ballotanigra.jpg
Black horehound flowers

Fruit

Each fertilized flower produces a tetrad of black nutlets, cylindrical to ovoid, 2 mm long, partially or fully covered by the calyx. The basal end is flat and attached to the receptacle, while the top end is rounded or pointed.

Biochemistry

Ballota nigra contains diterpenoids like marrubiin, ballonigrin, ballotinone, ballotenol and 7-acetoxymarrubiin. Also, it contains phenylpropanoids.[ citation needed ]

Taxonomy and etymology

The plant was described by Linnaeus in Species Plantarum (May 1753). The name Ballota comes from the Greek ballo (to reject), because of the strong offensive odor of the plant; cattle will not eat it. The specific name nigra could refer to the black colour of dried leaves.

The common name comes from the Old English words har, meaning "downy or hoary", and hune, meaning the plant itself. This name refers to the hairs that give the herb its distinctive appearance. In modern times, alternative medicine practitioners have referred to the plant as "seed of Horus" [6] and suggested that horehound takes its name from Horus, the Egyptian sun god.

Distribution and habitat

Ballota nigra is a nitrophilous plant; it grows in ruins, fallows, and hedges at elevations up to 1300 m. It prefers loose, calcareous (alkaline) soils. It tolerates temperatures as low as -5°/-10 °C.

Uses

Usually the plant is used dry and harvested when blooming. Syrups can be made from fresh plants.

Subspecies

Recognized subspecies: [1]

  1. Ballota nigra subsp. anatolicaP.H.Davis - Iran, Turkey
  2. Ballota nigra subsp. anomalaGreuter - Greece
  3. Ballota nigra subsp. foetida(Vis.) Hayek - central + southern Europe; naturalized in Sweden, Ukraine, Cyprus, Turkey, Argentina
  4. Ballota nigra subsp. kurdica P.H.Davis - Iran, Iraq, Turkey
  5. Ballota nigra subsp. nigra - southern Europe, Great Britain, Sweden, Caucasus, Iran, Turkey; naturalized in Belgium, New Zealand, Argentina
  6. Ballota nigra subsp. ruderalis(Sw.) Briq. - Mediterranean region; Canary Islands, Madeira, Azores
  7. Ballota nigra subsp. sericea(Vandas) Patzak - Albania, Macedonia, Greece
  8. Ballota nigra subsp. velutina(Posp.) Patzak - Slovenia, Croatia; naturalized in Argentina

See also

White Horehound

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References

  1. 1 2 3 Kew World Checklist of Selected Plant Families
  2. Altervista Flora Italiana, Marrubio selvatico, Ballota nigra L. includes distribution maps for Italy, Europe, and North America
  3. Webb, C.J., Sykes, W.R & Garnock-Jones, P.J. (1988). Flora of New Zealand 4: 1-1365. R.E.Owen, Government Printer, Wellington.
  4. Castroviejo, S. & al. (eds.) (2010). Flora Iberica 12: 1-650. Real Jardín Botánico, CSIC, Madrid.
  5. Lazkov, G.A. & Sultanova, B.A. (2011). Checklist of vascular plants of Kyrgyzstan. Norrlinia 24: 1-166
  6. Champaign-Urbana Herb Society — Herb of the Month, March 2004: Horehound (Marrubium vulgare) [ permanent dead link ]: Horehound takes its name from Horus, the Egyptian god of sky and light. The Egyptian priests called this plant "Seed of Horus", or "Bull’s Blood" and "Eye of the Star."