1. Family: Lamiaceae Martinov
    1. Lycopus L.

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

    [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.

    Habit
    Perennial herbs, with horizontal rhizomes or runners, sometimes tuberiferous, weakly or not aromatic, with simple hairs
    Leaves
    Leaves opposite, petiolate or sessile, ovate to lanceolate or linear, variously toothed or pinnatifid
    Inflorescences
    Inflorescence of tight, axillary verticillasters
    Flowers
    Flowers sessile to subsessile
    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
    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
    Stamens
    Stamens 2 (posterior pair reduced to staminodes or absent), exserted or included, filaments glabrous, thecae parallel to divergent, separate at dehiscence
    Style
    Style often expanded near base to form flange covering top of ovary
    Stigma
    Stigma-lobes equal or unequal
    Disc
    Disc symmetrical
    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).

    Images

    Distribution

    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, Masachusettes, 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
    • 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.
    • Phytosalpinx Lunell, Amer. Midl. Naturalist 5: 2 (1917), nom. illeg.
    • Euhemus Raf., Autik. Bot.: 115 (1840).
    • L., Gen. Pl. ed. 5: 12 (1754)
    • Lycopus L., Sp. Pl. 1: 21 (1753)

    Sources

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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 2019. 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