1. Family: Poaceae Barnhart
    1. Genus: Cleistogenes Keng
      1. Cleistogenes hancei Keng

        This species is accepted, and its native range is S. Russian Far East to N. & E. China.

    [GB]
    Habit
    Perennial; mat forming. Culms erect; robust; 80-100 cm long; 2-2.5 mm diam. Culm-internodes similar in length. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths tight; longer than adjacent culm internode; smooth. Ligule a fringe of hairs; 0.6 mm long. Leaf-blades convolute; 5-15 cm long; 4-7 mm wide. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence composed of racemes. Racemes borne along a central axis; unilateral; 2-5 cm long. Central inflorescence axis 10-14 cm long. Spikelet packing lax. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; 1-2 mm long.
    Spikelets
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 9-13 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.8-2 mm long; pubescent; hairy at tip. Floret callus pubescent.
    Fertile
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 9-13 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.8-2 mm long; pubescent; hairy at tip. Floret callus pubescent.
    Glume
    Glumes persistent; dissimilar; shorter than spikelet. Lower glume lanceolate; 4.8-5.3 mm long; 0.8 length of upper glume; membranous; 1-keeled; 3-5 -veined. Lower glume surface scabrous. Lower glume apex acute. Upper glume lanceolate; 6-6.5 mm long; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; (3-)5-7 -veined. Upper glume surface scabrous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 6.5-7.5 mm long; 2.2 mm wide; membranous; keeled; 5-7 -veined. Lemma surface asperulous. Lemma margins pubescent; hairy below. Lemma hairs 0.3 mm long. Lemma apex dentate; 2 -fid; with lobes 0.3-0.5 mm long; awned; 1 -awned. Principal lemma awn from a sinus; 1.4-2 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate. Palea surface pilose; hairy on flanks. Palea apex dentate; 2 -fid; awned. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; fleshy. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Cleistogene
    Cleistogenes present; in upper sheaths.
    Distribution
    Asia-temperate: Soviet far east and China.
    Reference
    Eragrostideae. Conert.

    Images

    Distribution

    Native to:

    China North-Central, China Southeast, Inner Mongolia, Manchuria, Primorye

    Cleistogenes hancei Keng appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Williams, S.W. [12572], China Kengia hancei K000899938
    Williams, S.W. [12572], China Kengia hancei K000899939

    First published in Sinensia 11: 408 (1940)

    Accepted by

    • 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.
    • Kharkevich, S.S., Probatova, N.S. & Novikov, V.S. (1985). Sosudistye rasteniia sovetskogo Dal’nego Vostoka 1: 1-383. Izd-vo "Nauka," Leningradskoe otd-nie, Leningrad.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Kharkevich, S.S., Probatova, N.S. & Novikov, V.S. (1985). Sosudistye rasteniia sovetskogo Dal’nego Vostoka 1: 1-383. Izd-vo "Nauka," Leningradskoe otd-nie, Leningrad.

    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