1. Family: Orchidaceae Juss.
    1. Genus: Paphiopedilum Pfitzer
      1. Paphiopedilum helenae Aver.

        This species is accepted, and its native range is China (SW. Guangxi) to N. Vietnam.

    [C-EM]
    Distribution

    Northern Vietnam: Cao Bang Province only

    Ecology

    On karst limestone hills in Keteleeria davidiana dominated forest; 850–900 m elevation.

    General Description

    A small lithophytic herb with clustered growths. Leaves 3–4(5), coriaceous-fleshy, subsucculent, oblanceolate to oblong-elliptic, tridenticulate at obtuse apex, 4–12 cm long, 1–2 cm wide, green with paler yellowish white margin, 4–12 cm long, 1–2 cm wide, dark green with paler yellowish green margin. Inflorescence arching to subhorizontal, one-flowered; peduncle 4–6.5 cm long, shortly and densely dark purple pubescent; bract conduplicate, ovate to elliptic, obtuse, 8–12 mm long, 3–4 mm wide. Flower large for plant, pubescent on outer surface of sepals; dorsal sepal golden yellow with a white margin; synsepal white; petals and lip ochreous yellow with darker veins; staminode pale yellow with a darker shiny central boss; pedicel and ovary 2–3.5 cm long, densely dark purple pubescent. Dorsal sepal obovate-subcircular, obtuse, 18–35 mm long, 15–30 mm wide, side margins reflexed, apical margin somewhat incurved; synsepal ovate-elliptic, obtuse, 15–25 mm long, 8–15 mm wide. Petals straight to somewhat incurved, ligulate to subspatulate, obtuse or truncate at apex, 28–35 mm long, ciliate, slightly pubescent at base on inner surface. Lip deeply saccate, not tapering much in apical part, 20–30 mm long, 15–20 mm wide, glabrous on outer surface; side lobes inflexed, not warted. Column 5–6 mm long; stamniode broadly obovate to subcircular, 7–8 mm long and wide, papillose with a central raised boss.

    Images

    Distribution

    Native to:

    China Southeast, Vietnam

    Paphiopedilum helenae Aver. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    73712.000
    Averyanov [s.n.], Vietnam K000078063

    First published in Orchids (West Palm Beach) 65: 1064 (1996)

    Accepted by

    • Koopowitz, H. (2012). An updated, annotated checklist of the genus Paphiopedilum Orchid Digest 76: 178-215.
    • Wu, Z. & Hong, D. (eds.) (2009). Flora of China 25: 1-570. Missouri Botanical Garden Press, St. Louis.
    • Averyanov, L. (2008). The orchids of Vietnam illustrated survey part 1 Subfamilies Apostasioideae, Cyprioedioideae and Spiranthoideae Turczaninowia 11(1): 5-168.
    • Huang, Y.F. & Xue, Y.G. (2007). Conservation status of Paphiopedilum helenae Aver., a newly recorded orchid in China Acta Phytotaxonomica Sinica 45: 333-336.
    • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Averyanov, L. (2008). The orchids of Vietnam illustrated survey part 1 Subfamilies Apostasioideae, Cyprioedioideae and Spiranthoideae Turczaninowia 11(1): 5-168.
    • Huang, Y.F. & Xue, Y.G. (2007). Conservation status of Paphiopedilum helenae Aver., a newly recorded orchid in China Acta Phytotaxonomica Sinica 45: 333-336.
    Cypripedioideae: e-monocot.org
    • Averyanov, L.V. Original description of Paphiopedilum helenae. 65, (1996).
    • Averyanov, L.V., Hiep, N.T., Loc, P.K. & Huyen, D.D. Endangered Vietnamese Paphiopedilums I. Paphiopedilum helenae. Orchids 65, 1062-1069 (1996).

    Sources

    Cypripedioideae: e-monocot.org
    All Rights Reserved

    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/