1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus calcicola (Keng) S.L.Chen

        This species is accepted, and its native range is China (Guizhou, Sichuan, Yunnan).

    [GB]
    Habit
    Perennial; caespitose. Culms geniculately ascending; 100 cm long; 1-1.5 mm diam.; 5 -noded; with 0.75 of their length below uppermost node. Leaf-sheaths 15 cm long; longer than adjacent culm internode; striately veined; glabrous on surface. Ligule an eciliate membrane; 0.5 mm long; truncate. Leaf-blades 10-20 cm long; 4-5 mm wide; glaucous and dark green; discolorous with last colour beneath. Leaf-blade surface pilose; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; straight, or flexuous; bilateral; 12-20 cm long. Rhachis flattened; ciliate on margins. Spikelet packing broadside to rhachis; regular; 2 -rowed. Rhachis internodes 7-12 mm long (lowest -30). Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 12-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus base acute. Rhachilla internodes 1-2 mm long; pubescent. Floret callus pubescent.
    Fertile
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 12-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus base acute. Rhachilla internodes 1-2 mm long; pubescent. Floret callus pubescent.
    Glume
    Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate, or oblong; 5-8 mm long; coriaceous; without keels; 3-5 -veined. Lower glume surface glabrous. Lower glume apex acuminate; muticous. Upper glume lanceolate, or oblong; 6-10 mm long; coriaceous; without keels; 5-7 -veined. Upper glume surface glabrous. Upper glume apex acuminate; muticous.
    Florets
    Fertile lemma lanceolate; 9-11 mm long; coriaceous; without keel; 5 -veined. Lemma surface glabrous, or puberulous. Lemma apex awned; 1 -awned. Principal lemma awn straight; 15-25 mm long overall. Palea lanceolate; 1 length of lemma; 2 -veined. Palea surface puberulous; hairy on back. Palea apex emarginate, or obtuse. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; 1 mm long; membranous; glabrous. Anthers 3; 2 mm long; yellow. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; oblong; sulcate on hilar side; 6 mm long; dark brown; hairy at apex; apex unappendaged. Hilum linear.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Chen 2001.

    Distribution

    Native to:

    China South-Central

    Elymus calcicola (Keng) S.L.Chen appears in other Kew resources:

    First published in Fl. China 22: 424 (2006)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    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

    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