1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus villosissimus (Scribn.) Tzvelev

        This species is accepted, and its native range is E. Siberia to W. Canada.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes elongated. Culms 25-60 cm long. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 0.5-1 mm long. Leaf-blades flat, or involute; 3-8 mm wide; coriaceous; stiff; glaucous. Leaf-blade surface scaberulous; rough adaxially.
    Inflorescences
    Inflorescence composed of racemes. Peduncle hirsute above. Racemes 1; single; linear; bilateral; 5-10 cm long; 12-17 mm wide. Rhachis pubescent on surface. Spikelet packing broadside to rhachis; crowded. Rhachis internodes linear. Spikelets appressed; in pairs, or in threes. Fertile spikelets sessile and pedicelled; 2-3 in the cluster.
    Spikelets
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 9-14 mm long; 1 length of upper glume; coriaceous; 3 -veined. Lower glume lateral veins obscure. Lower glume surface villous. Lower glume apex acuminate. Upper glume lanceolate; 9-14 mm long; 0.8-1 length of adjacent fertile lemma; coriaceous; 3 -veined. Upper glume lateral veins obscure. Upper glume surface villous. Upper glume apex acuminate.
    Florets
    Fertile lemma lanceolate; 10-13 mm long; coriaceous; without keel; 5-7 -veined. Lemma surface villous. Lemma apex acute; muticous. Palea 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
    Distribution
    Asia-temperate: Siberia and Soviet far east.
    Reference
    Triticeae. Fl USSR 1996.

    Images

    Distribution

    Native to:

    Alaska, British Columbia, Kamchatka, Magadan, Northwest Territorie, Yakutskiya, Yukon

    Leymus villosissimus (Scribn.) Tzvelev appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Macoun, J.M. [16626], Alaska K001065453

    First published in Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 20: 429 (1960)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.
    • 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
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.
    • 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