1. Family: Poaceae Barnhart
    1. Genus: Pseudoroegneria (Nevski) Á.Löve
      1. Pseudoroegneria spicata (Pursh) Á.Löve

        This species is accepted, and its native range is Alaska to W. & Central U.S.A.

    [GB]
    Habit
    Perennial; caespitose. Culms 50-100 cm long. Leaf-sheaths glabrous on surface. Leaf-sheath auricles absent. Ligule an eciliate membrane; 1-2 mm long. Leaf-blades filiform; involute; 1-3 mm wide; light green, or mid-green. Leaf-blade surface puberulous; hairy adaxially.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 10-25 cm long; bearing 5-12 fertile spikelets on each. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis; lax. Rhachis internodes linear; 10-20 mm long. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 6-8 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 20-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.5-2 mm long; scaberulous.
    Fertile
    Spikelets comprising 6-8 fertile florets; with diminished florets at the apex. Spikelets elliptic to oblong; laterally compressed; 20-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.5-2 mm long; scaberulous.
    Glume
    Glumes collateral; persistent; similar; shorter than spikelet. Lower glume lanceolate; 10 mm long; 1 length of upper glume; coriaceous; yellow; without keels; 3-5 -veined. Lower glume surface smooth, or scabrous; rough on veins. Lower glume apex obtuse, or acute. Upper glume lanceolate; 10 mm long; 1 length of adjacent fertile lemma; coriaceous; yellow; without keels; 3-5 -veined. Upper glume surface smooth, or scabrous; rough on veins. Upper glume apex obtuse, or acute.
    Florets
    Fertile lemma lanceolate to oblong; 8-10 mm long; coriaceous; 5-7 -veined. Lemma lateral veins obscure. Lemma apex acute; awned; 1 -awned. Principal lemma awn curved; 10-20 mm long overall. Palea 1 length of lemma. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: Subarctic, western Canada, northwest USA, north-central USA, northeast USA, southwest USA, and south-central USA.
    Reference
    Triticeae. Gr Tex 1993.

    Images

    Distribution

    Native to:

    Alaska, Alberta, Arizona, British Columbia, California, Colorado, Idaho, Michigan, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, Saskatchewan, South Dakota, Texas, Utah, Washington, Wyoming, Yukon

    Pseudoroegneria spicata (Pursh) Á.Löve appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Elmer, A. D. E. [245], Washington Elymus spicatus K000674991
    Elmer, A. D. E. [1158], Washington Elymus spicatus K000674992

    First published in Taxon 29: 168 (1980)

    Not 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. [Cited as Elymus spicatus.]

    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

    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 2018. 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 2018. 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