1. Family: Acoraceae Martinov
    1. Genus: Acorus L.
      1. Species: Acorus calamus L.
        1. Acorus calamus var. americanus Raf.

        This variety is accepted, and its native range is Central Siberia to Mongolia, Subarctic America to N & E. U.S.A.

    Distribution

    Native to:

    Alaska, Alberta, British Columbia, Buryatiya, Connecticut, Idaho, Iowa, Kansas, Maine, Manitoba, Masachusettes, Michigan, Minnesota, Mongolia, Montana, Nebraska, New Brunswick, New Hampshire, New York, Northwest Territorie, Nova Scotia, Ohio, Ontario, Pennsylvania, Prince Edward I., Québec, Saskatchewan, South Dakota, Vermont, Washington, Wisconsin

    Extinct in:

    District of Columbia, Illinois, Indiana, New Jersey, Newfoundland, North Dakota, Rhode I., Virginia

    Acorus calamus var. americanus Raf. appears in other Kew resources:

    First published in Med. Fl. 1: 25 (1828)

    Accepted by

    • Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.

    Not accepted by

    • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis. [Cited as Acorus calamus.]

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.

    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