1. Family: Orchidaceae Juss.
    1. Genus: Cypripedium L.
      1. Cypripedium kentuckiense C.F.Reed

        This species is accepted, and its native range is SE. Oklahoma to SE. U.S.A.

    [C-EM]
    Biology

    Flowering in May to June.

    Distribution

    D.S.A. (Texas, Mississippi, Kentucky, Ohio, Missouri, Arkansas, Louisiana, Tennessee).

    Ecology

    In mesophytic woodland of Ulmus rubra (slippery elm), Acer saccharum (sugar maple), Betula nigra (black birch), Liriodendron tulipifera (tulip tree), and so forth, mainly in deep ravines on acid sandstone soils, alluvial terraces and on the banks of streams; sea level to 500 m. Flowering in May to June.

    General Description

    A large terrestrial herb with a short stout rhizome. Erect stems 40-71 cm tall, finely glandular-pubescent. Leaves usually five, broadly elliptic-ovate, 14-17 cm long, 5-9.5 cm wide, finely pubescent on the veins on the lower surface, ciliate. Inflorescence one-flowered; bract leaf-like, 6-11.5 cm long, 2.8-4.6 cm wide. Flower showy with the sepals and petals greenish striped and mottled with purple and a creamy white to pale yellow lip, marked within with purple, the staminode pale yellow marked with red; pedicel and ovary 3-5.5 cm long, reddish glandular-pubescent. Dorsal sepal suberect-eurving over lip, lanceolate, acuminate, 6.5-11 cm long, undulate on margins, slightly twisted, sparsely pubescent. Synsepallanceolate, bidenticulate at apex, 5~7-6.3 cm long, 1.1-1~3 cm wide~ Petals deflexed-pendent, spirally twisted, linear-tapering, acute, 7-9 cm long, 0.7 cm wide, pubescent within at base and along mid-vein. Lip large, 5-7 cm long, 3.5 cm across, with a broad mouth, 1.5-1.7 cm long and 1.2-1.3 cm across. Column 1-1.4 cm long; staminode conduplicate, ovate.

    Distribution

    Native to:

    Alabama, Arkansas, Georgia, Kentucky, Louisiana, Mississippi, Oklahoma, Tennessee, Texas, Virginia

    Cypripedium kentuckiense C.F.Reed appears in other Kew resources:

    First published in Phytologia 48: 426 (1981)

    Accepted by

    • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

    Literature

    Cypripedioideae: e-monocot.org
    • Reed, C.F. Original description of Cypripedium kentuckiense. 48, (1981).

    Sources

    Cypripedioideae: e-monocot.org
    All Rights Reserved

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. 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 2020. 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