1. Family: Cyperaceae Juss.
    1. Hypolytrum Pers.

      1. This genus is accepted, and its native range is Tropics.

    [FTEA]

    Cyperaceae, K Hoenselaar, B. Verdcourt & H. Beentje. Hypolytrum, D Simpson. Fuirena, M Muasya. Flora of Tropical East Africa. 2010

    Habit
    Robust, rhizomatous, perennial herbs.
    Roots
    Roots coarse; cataphylls subtending lateral culms only, the upper ones with at least part of the margins adnate at first and completely sheathing the culm, later splitting.
    Culms
    Culms usually scapose
    Leaves
    Leaves eligulate; basal leaf sheaths open adaxially, cauline leaf sheath tubular
    Bracts
    Involucral bracts leaf-like
    Inflorescences
    Inflorescence terminal, paniculate, the ultimate branches subtending small clusters of spikes. Spikes ellipsoid or narrowly cylindric, composed of tightly imbricate, spirally arranged bracts, each subtending a much reduced pseudanthium (spicoid).
    Flowers
    Spicoid composed of a naked terminal pistil and (2–3) floral bracts each subtending a single stamen, and a naked terminal pistil; floral bracts free, membranous, boat-shaped, strongly keeled.
    Anthers
    Anthers oblong to linear, latrorsely dehiscent, without extended connective tip.
    Filaments
    Filaments filiform, exceeding spicoid bract.
    Stigma
    Stigma branches 2(–3).
    Style
    Style elongate, rarely persistent
    Fruits
    Nutlet compressedellipsoid to ellipsoid, apical portion spongy, triangular, base shortly stipitate or triangular stipitate; surface with or without longitudinal ridges.
    Leaf veins
    Lateral costae 0 or 2

    Images

    Distribution

    Native to:

    Andaman Is., Angola, Assam, Bangladesh, Belize, Benin, Bismarck Archipelago, Bolivia, Borneo, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Cabinda, Cambodia, Cameroon, Caroline Is., Central African Repu, Central American Pac, China South-Central, China Southeast, Colombia, Congo, Costa Rica, East Himalaya, Ecuador, Equatorial Guinea, Fiji, French Guiana, Gabon, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Honduras, India, Ivory Coast, Jawa, Laos, Liberia, Madagascar, Malaya, Maluku, Mauritius, Mexico Gulf, Mexico Southeast, Myanmar, New Guinea, Nicaragua, Nicobar Is., Nigeria, Northern Territory, Panamá, Peru, Philippines, Queensland, Réunion, Senegal, Sierra Leone, Solomon Is., Sri Lanka, Sulawesi, Sumatera, Suriname, Taiwan, Tanzania, Thailand, Trinidad-Tobago, Uganda, Venezuela, Vietnam, Zaïre

    Hypolytrum Pers. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Wallich, N. [Cat. no. 3401], Singapore K001119313
    Wallich, N. [Cat. no. 3402], Malaysia K001119314
    Wallich, N. [Cat. no. 3403], Malaysia K001119316
    Wallich, N. [Cat. no. 3405], Nepal K001119324
    Wallich, N. [Cat. no. 3405], India K001119325
    s.coll. [Cat. no. 3402] K001119315

    First published in Syn. Pl. 1: 70 (1805)

    Accepted by

    • Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of West Tropical Africa
    • Nelmes in Kew Bull. 10: 63–82 (1955).
    • F.T.A. 8: 486 (1902)
    • in Pers. Syn. 1: 70 (1805)
    Flora of Tropical East Africa
    • K.B. 1955: 63–82 (1955)
    • Pers., Syn. 1: 70 (1805)

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of West Tropical Africa
    Flora of West Tropical Africa

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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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