1. Family: Hypericaceae Juss.
    1. Genus: Hypericum Tourn. ex L.
      1. Species: Hypericum ascyron L.
        1. Hypericum ascyron subsp. pyramidatum (Aiton) N.Robson

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

    Distribution

    Native to:

    Connecticut, Illinois, Indiana, Iowa, Kansas, Maine, Maryland, Masachusettes, Michigan, Minnesota, Missouri, New Hampshire, New York, Ohio, Ontario, Pennsylvania, Québec, Vermont, Wisconsin

    Hypericum ascyron subsp. pyramidatum (Aiton) N.Robson appears in other Kew resources:

    First published in Bull. Nat. Hist. Mus. (London), Bot. 31: 58 (2001)

    Accepted by

    • Flora of North America Editorial Committee (2015). Flora of North America North of Mexico 6: 1-468. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Flora of North America Editorial Committee (2015). Flora of North America North of Mexico 6: 1-468. Oxford University Press, New York, Oxford.
    • Robson, N.K.B. (2001). Studies in the genus Hypericum L. (Guttiferae) 4(1). Sections 7. Roscyna to 9. Hypericum sensu lato (part 1) Bulleton of the Natural History Museum. Botany Series 31: 37-88.

    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