1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus jacquemontii (Hook.f.) Tzvelev

        This species is accepted, and its native range is Tadzhikistan to W. China and W. Himalaya.

    [GB]
    Habit
    Perennial; caespitose. Butt sheaths papery (hyaline); pallid (silvery); glossy. Culms erect, or geniculately ascending; 18-32 cm long. Ligule an eciliate membrane. Leaf-blades filiform; conduplicate, or convolute; 3-9 cm long; 1.5-2 mm wide. Leaf-blade surface smooth; glabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 3-6 cm long. Rhachis flattened; smooth on margins. Spikelet packing broadside to rhachis; lax. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 16-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 16-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate, or oblong; 4.5-6.5 mm long; 0.75-0.8 length of upper glume; coriaceous; without keels; 3-5 -veined. Lower glume lateral veins ribbed. Lower glume surface smooth, or scabrous. Lower glume apex acuminate; muticous, or awned; 1 -awned. Lower glume awn 0-1 mm long. Upper glume elliptic, or oblong; 6-8 mm long; 0.75-0.9 length of adjacent fertile lemma; coriaceous; without keels; 3-5 -veined. Upper glume lateral veins ribbed. Upper glume surface smooth, or scabrous. Upper glume apex acuminate; muticous, or awned; 1 -awned. Upper glume awn 0-2 mm long.
    Florets
    Fertile lemma elliptic, or oblong; 8-9 mm long; coriaceous; keeled; keeled above; 5 -veined. Lemma surface smooth, or scaberulous. Lemma apex acute; awned; 1 -awned. Principal lemma awn curved; reflexed; 15-40 mm long overall. Palea 1 length of lemma. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; elliptic; membranous. Anthers 3; 1.5 mm long. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: western Asia and China. Asia-tropical: India.
    Reference
    Triticeae. Fl Pak 1993.

    Images

    Distribution

    Native to:

    Tadzhikistan, Tibet, West Himalaya, Xinjiang

    Elymus jacquemontii (Hook.f.) Tzvelev appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Strachey, R. [3] K000674953
    Thomson, T. [s.n.], India K000674951 Unknown type material
    Jacquemont, V. [329] K000674952

    First published in Akad. Nauk S.S.S.R. Bot. Inst. Komarova, Rast. Tsentral. Azii 4: 221 (1968)

    Accepted by

    • Kandwal, M.K. & Gupta, B.K. (2009). An update on grass flora of Uttarkhand Indian Journal of Forestry 32: 657-668.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
    • Cope, T.A. (1982). Flora of Pakistan 143: 1-678. Department of Botany, University of Karachi, Karachi.

    Literature

    Kew Backbone Distributions
    • Kandwal, M.K. & Gupta, B.K. (2009). An update on grass flora of Uttarkhand Indian Journal of Forestry 32: 657-668.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Ovczinnikov, P.N. (ed.) (1957). Flora Tadzhikskoi SSR 1: 1-547. Izd-vo Akademii nauk SSSR, Moskva.

    Sources

    GrassBase - The Online World Grass Flora
    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.
    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 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