1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus yangiae B.Rong Lu

        This species is accepted, and its native range is Tibet.

    [GB]
    Habit
    Perennial. Culms erect; 60-110 cm long; 4-7 -noded. Leaf-sheaths antrorsely scabrous. Leaf-sheath auricles falcate; 1.2-2 mm long. Ligule an eciliate membrane; 0.3-0.6 mm long; lacerate. Leaf-blades 5-25 cm long; 3-4 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins ciliate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; arcuate; bilateral; 10-15 cm long; 5-8 mm wide. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 17-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.7-2.1 mm long; pilose.
    Fertile
    Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 17-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.7-2.1 mm long; pilose.
    Glume
    Glumes persistent; similar. Lower glume lanceolate; 2-4.5 mm long; coriaceous; much thinner on margins; without keels; 2-3 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex acute, or acuminate. Upper glume lanceolate; 3-3.5 mm long; coriaceous; with membranous margins; without keels; 2-5 -veined. Upper glume surface scabrous; rough on veins. Upper glume apex acute, or acuminate.
    Florets
    Fertile lemma lanceolate; 7-10 mm long; coriaceous; 5 -veined. Lemma surface pubescent, or pilose. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 12-32 mm long overall. Palea lanceolate; 1 length of lemma; 2 -veined. Palea keels ciliate. Palea surface pubescent; hairy on back. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 3.5-4.2 mm long; yellow.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Fl China 2005.

    Images

    Distribution

    Elymus yangiae B.Rong Lu appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Yang, J-L. [8341], Tibet K000674957 isotype
    Yang, J-L. [8341], Tibet K000674958 isotype

    First published in Willdenowia 22: 129 (1992)

    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.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    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