1. Family: Cupressaceae Gray
    1. Genus: Thuja L.
      1. Thuja occidentalis L.

        This species is accepted, and its native range is Central & E. Canada to N. Central & E. U.S.A.

    [EDGE]

    Forest, F. et al. 2018. Gymnosperms on the EDGE. Scientific Reports 8: 6053. doi:10.1038/s41598-018-24365-4.

    Conservation
    Thuja occidentalis is rated as Least Concerned (LC) according to IUCN Red List criteria and has received a EDGE score of -7.6, which places it in position 762 on the EDGE Gymnosperm list. It has a Evolutionary Distinctiveness of 10, ranked 225. More information on the EDGE Gymnosperm project here https://www.edgeofexistence.org.

    Images

    Distribution

    Native to:

    Connecticut, Illinois, Indiana, Kentucky, Maine, Manitoba, Masachusettes, Michigan, Minnesota, New Brunswick, New Hampshire, New Jersey, New York, North Carolina, Nova Scotia, Ohio, Ontario, Pennsylvania, Prince Edward I., Québec, Rhode I., Tennessee, Vermont, Virginia, West Virginia, Wisconsin

    Introduced into:

    Austria, Central European Rus, Czechoslovakia, Korea

    Thuja occidentalis L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2012 Seidler, T. [NEWFS68], USA K000554636
    Feb 1, 2001 Bourdo, E.A. [28466] K000088920
    Mar 1, 2000 Small, J.K. [s.n.] K000088914
    Mar 1, 2000 Soper, J.H. [2059], Canada K000088918
    Mar 1, 2000 Baldwin, W.K.W. [3162], Canada K000088922
    Mar 1, 2000 Baldwin, W.K.W. [5748], Canada K000088925
    Mar 1, 2000 Scoggan, H.J. [4693], Canada K000088924
    Mar 1, 2000 McKelvey, S.D. [s.n.] K000088915
    Mar 1, 2000 Wilkinson, W.H. [127], Canada K000088919
    Mar 1, 2000 Churchill, J.R. [s.n.], Canada K000088917
    Mar 1, 2000 Brainard, E. [s.n.] K000088916
    Mar 1, 2000 Allen, J.A. [2667] K000088913
    Mar 1, 2000 Senn, H.A. [5237], Canada K000075282
    Mar 1, 2000 Blake, J. [s.n.], Canada K000088923
    Mar 1, 2000 Rolland-Germain, ["Frère"] [6031], Canada K000088921
    Mar 1, 2000 Sylvio ["Frère"] [1684], Canada K000088926
    73856.000
    74113.000

    First published in Sp. Pl.: 1002 (1753)

    Accepted by

    • Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST.
    • Seregin, A.P. (2014). Flora of Vladimir Oblast, Russia: grid data analysis: 1-441. KMK schientific press, Moscow.
    • Danihelka, J. Chrtek, J. & Kaplan, Z. (2012). Checklist of vascular plants of the Czech Republic Preslia. Casopsi Ceské Botanické Spolecnosti 84: 647-811.
    • Farjon, A. (2010). A handbook of the world's Conifers 2: 533-1111. BRILL, Leiden, Boston.
    • Herkert, J.R. & Ebinger, J.E. (eds.) (2002). Endangered and Threatened Species of Illinois: status and distribution 1: 1-161. Endangered species protection board, Springfield, Illinois.
    • Farjon, A. (2001). World Checklist and Bibliography of Conifers, ed. 2: 1-309. The Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST.
    • Seregin, A.P. (2014). Flora of Vladimir Oblast, Russia: grid data analysis: 1-441. KMK schientific press, Moscow.
    • Danihelka, J. Chrtek, J. & Kaplan, Z. (2012). Checklist of vascular plants of the Czech Republic Preslia. Casopsi Ceské Botanické Spolecnosti 84: 647-811.
    • Farjon, A. (2001). World Checklist and Bibliography of Conifers, ed. 2: 1-309. The Royal Botanic Gardens, Kew.

    Sources

    EDGE Gymnosperms
    EDGE of Existence (Gymnosperms)
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    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

    Kew Science Photographs
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/