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This genus is accepted, and its native range is Temp. Northern Hemisphere to NW. Africa, E. & SE. Australia.
Lycopus lucidus

[LKGF]

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Perennial herbs, with horizontal rhizomes or runners, sometimes tuberiferous, weakly or not aromatic, with simple hairs
Morphology Leaves
Leaves opposite, petiolate or sessile, ovate to lanceolate or linear, variously toothed or pinnatifid
Morphology Reproductive morphology Inflorescences
Inflorescence of tight, axillary verticillasters
Morphology Reproductive morphology Flowers
Flowers sessile to subsessile
Morphology Reproductive morphology Flowers Calyx
Calyx actinomorphic to weakly zygomorphic, not accrescent, tubular-campanulate to campanulate, 4-5-nerved, 4-5-lobed, lobes ± equal, ovate to lanceolate-subulate or aristate, throat glabrous
Morphology Reproductive morphology Flowers Corolla
Corolla white, usually weakly zygomorphic, occasionally ± actinomorphic or 2-lipped, lobes usually 4, posterior and sometimes anterior lobe larger than lateral ones, all entire or posterior lobe bifid, tube straight
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2 (posterior pair reduced to staminodes or absent), exserted or included, filaments glabrous, thecae parallel to divergent, separate at dehiscence
Morphology Reproductive morphology Flowers Gynoecium Style
Style often expanded near base to form flange covering top of ovary
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma-lobes equal or unequal
Morphology Reproductive morphology Flowers Disc
Disc symmetrical
Morphology Reproductive morphology Fruits
Nutlets obovoid-tetrahedral, often with conspicuously toothed to tuberculate apical crest, glabrous, inner and upper faces often densely glandular.
Note
2n = 22.  About fourteen species
Ecology
Wet habitats
Distribution
Mostly in the north-temperate zone (one species in Australia e introduced to New Zealand).

Native to:

Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Arizona, Arkansas, Austria, Azores, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Central European Rus, China North-Central, China South-Central, China Southeast, Chita, Colorado, Connecticut, Corse, Czechoslovakia, Delaware, Denmark, District of Columbia, East Aegean Is., East European Russia, Finland, Florida, France, Georgia, Germany, Great Britain, Greece, Hungary, Idaho, Illinois, Indiana, Inner Mongolia, Iowa, Iran, Iraq, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kansas, Kazakhstan, Kentucky, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kriti, Krym, Kuril Is., Labrador, Lebanon-Syria, Louisiana, Maine, Manchuria, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Morocco, Nebraska, Netherlands, Nevada, New Hampshire, New Jersey, New Mexico, New South Wales, New York, Newfoundland, North Carolina, North Caucasus, North Dakota, North European Russi, Northwest European R, Northwest Territorie, Norway, Ohio, Oklahoma, Ontario, Oregon, Pakistan, Palestine, Pennsylvania, Poland, Portugal, Primorye, Queensland, Québec, Rhode I., Romania, Sakhalin, Sardegna, Saskatchewan, Sicilia, South Australia, South Carolina, South Dakota, South European Russi, Spain, Sweden, Switzerland, Tadzhikistan, Taiwan, Tasmania, Tennessee, Texas, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Tuva, Ukraine, Utah, Uzbekistan, Vermont, Victoria, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yugoslavia, Yukon

Introduced into:

New Zealand North, Nova Scotia

Lycopus L. appears in other Kew resources:

First published in Sp. Pl.: 21 (1753)

Accepted by

  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Lamiaceae Key Genus Fact Sheets

  • Euhemus Raf., Autik. Bot.: 115 (1840).
  • Harley RM, Atkins S, Budantsev AL, Cantino PD, Conn BJ, Grayer R, Harley MM, de Kok RPJ, Krestovskaja T, Morales R, Paton AJ, Ryding O, and Upson T. 2004. Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Sp
  • Henderson, Amer. Midl. Naturalist 68: 95-138 (1962), rev.
  • L., Gen. Pl. ed. 5: 12 (1754)
  • Lycopus L., Sp. Pl. 1: 21 (1753)
  • Phytosalpinx Lunell, Amer. Midl. Naturalist 5: 2 (1917), nom. illeg.

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Lamiaceae Key Genus Fact Sheets
Nina Davies, Gemma Bramley and Don Kirkup, Royal Botanic Gardens, Kew
http://creativecommons.org/licenses/by/3.0