1. Family: Poaceae Barnhart
    1. Genus: Leymus Hochst.
      1. Leymus pacificus (Gould) D.R.Dewey

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

    [GB]
    Habit
    Perennial; culms solitary. Rhizomes elongated. Culms decumbent; 10-20 cm long. Ligule an eciliate membrane; truncate. Leaf-blades involute; 2-4 mm wide; coriaceous; stiff. Leaf-blade surface ribbed. Leaf-blade apex pungent.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; linear, or oblong; bilateral; 2-5 cm long. Rhachis glabrous on surface; glabrous on margins. Spikelet packing broadside to rhachis. Rhachis internodes linear. Spikelets appressed; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 12-15 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 12-15 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes collateral; persistent; similar; shorter than spikelet, or reaching apex of florets, or exceeding apex of florets. Lower glume subulate; coriaceous; 0 -veined. Lower glume lateral veins absent. Upper glume subulate; coriaceous; 1 -veined. Upper glume primary vein absent. Upper glume lateral veins absent.
    Florets
    Fertile lemma lanceolate; 10 mm long; coriaceous; without keel; 5 -veined. Lemma lateral veins obscure. Lemma apex acuminate to setaceously attenuate. Palea 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
    Distribution
    North America: southwest USA.
    Reference
    Triticeae. Man US Gr 1997.

    Distribution

    Native to:

    California

    Leymus pacificus (Gould) D.R.Dewey appears in other Kew resources:

    First published in Brittonia 35: 32 (1983)

    Accepted by

    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • 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
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.

    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