Lycopus

Lycopus (waterhorehound,[3] gypsywort, or bugleweed) is a genus in the family Lamiaceae. They are all herbaceous plants native to Europe, Asia, Australia, and North America.[2] The species are most often found in wetlands, damp meadows, and stream banks. Some of the wetland species have become endangered.[4]

For the spider genus, see Lycopus (spider).

Lycopus
Lycopus europaeus[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Subfamily: Nepetoideae
Tribe: Mentheae
Genus: Lycopus
L.
Synonyms[2]
  • Phytosalpinx Lunell
  • Euhemus Raf.

Appearance

The genus includes only perennial species; they spread by both seeds and stems rooting as they grow along the ground. Small white flowers bloom in late summer on leaf axials. Leaves are bright green, pointed, lobed, and like all mints occur in opposite pairs. Some species start with curled purple leaves that unfurl to a bright green coloration. The species in this genus vary in size, but generally grow to about 3–4 feet.[5]

Ethnobotanical history

The plant's juice yields black dye, supposedly used by the Roma to tan their skin to mimic Egyptians in Europe, and hence the common name of Gypsywort for Lycopus europaeus. Apothecaries and herbalists use the leaves, stems, and flowers for their astringent and sedative qualities as well as for anxiety, tuberculosis, and palpitations. Some species of the herb also may have narcotic and contraceptive effects.[5] Extracts may have benefits in Graves' disease.[6]

Fossil record

Fossil seeds of †Lycopus antiquus are known from the Middle Miocene strata of southern Russia, from the Miocene of Lower Lusatia, Germany and from the Late Miocene strata of western Siberia and Ukraine. Lycopus antiquus has possibly been applied to more than one extinct species which were widely distributed in Europe and Siberia from the Miocene to the Pliocene. Extant Lycopus species whose fruits most resemble L. antiquus, are the East Asian Lycopus lucidus and the Eurasian Lycopus exaltatus.[7]

Species

[2]

  1. Lycopus alissoviae Prob. – Primorye region of Russia
  2. Lycopus americanus Muhl. ex W.P.C.Barton – American bugleweed - widespread across most of United States and Canada
  3. Lycopus amplectens Raf. – eastern United States
  4. Lycopus angustifolius Elliott – southeastern United States
  5. Lycopus asper Greene – rough bugleweed - western Canada, western + central United States
  6. Lycopus australis R.Br. – Australian Gypsywort - Australia
  7. Lycopus cavaleriei H.Lév. – Korean bugleweed[8] - China, Japan, Korea, Sakhalin, Kuril Islands
  8. Lycopus charkeviczii Prob. – Primorye region of Russia
  9. Lycopus cokeri H.E.Ahles ex Sorrie – North Carolina, South Carolina
  10. Lycopus europaeus L. – Gypsywort - Europe, North Africa, northern Asia; naturalized in New Zealand and North America
  11. Lycopus exaltatus L.f. – central + eastern Europe, Siberia, Central Asia, Xinjiang, Caucasus, Western Himalayas
  12. Lycopus hirtellus Kom. – Primorye region of Russia
  13. Lycopus × intermedius Hausskn. – Germany, Austria, Czech Republic, Greece (L. europaeus × L. exaltatus)
  14. Lycopus kurilensis Prob. – Kuril Islands
  15. Lycopus laurentianus Roll.-Germ. – Quebec
  16. Lycopus lucidus Turcz. ex Benth. – Traditional Chinese Medicine herb to make Lycopi rhizoma - China, Japan, Korea, Siberia, Russian Far East
  17. Lycopus rubellus Moench – central + eastern United States
  18. Lycopus × sherardii Steele – Quebec, Ontario, eastern United States
  19. Lycopus sichotensis Prob. – Primorye region of Russia
  20. Lycopus uniflorus Michx. – northern bugleweed - Canada, United States. China, Japan, Korea, Russian Far East
  21. Lycopus virginicus L. – Virginia bugleweed/water-horehound - central + eastern United States
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References
  1. Prof. Dr. Otto Wilhelm Thomé Flora von Deutschland, Österreich und der Schweiz 1885, Gera, Germany
  2. Kew World Checklist of Selected Plant Families
  3. "Lycopus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 24 June 2015.
  4. PLANTS Profile for Lycopus rubellus (taperleaf water horehound) | USDA PLANTS
  5. Bremness, Lesley, Eyewitness Handbook: Herbs. New York: DK Publishing 1994
  6. MICHAEL AUF’MKOLK, JONATHAN C. INGBAR, KEN KUBOTA, SYED M. AMIR and SIDNEY H. INGBAR, "Extracts and Auto-Oxidized Constituents of Certain Plants Inhibit the Receptor-Binding and the Biological Activity of Graves’ Immunoglobulins*, Endocrinology Vol. 116, No. 5, 1985, 1687-1693.
  7. The Pliocene flora of Kholmech, south-eastern Belarus and its correlation with other Pliocene floras of Europe by Felix Yu. VELICHKEVICH and Ewa ZASTAWNIAK - Acta Palaeobot. 43(2): 137–259, 2003
  8. English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 529. ISBN 978-89-97450-98-5. Archived from the original (PDF) on 25 May 2017. Retrieved 16 December 2016 – via Korea Forest Service.
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