1. Family: Poaceae Barnhart
    1. Genus: Stipa L.
      1. Stipa lemmonii (Vasey) Scribn.

        This species is accepted, and its native range is W. Canada to W. U.S.A.

    [GB]
    Habit
    Perennial; caespitose. Culms 10-70 cm long. Culm-internodes scaberulous. Leaf-sheaths glabrous on surface to hirsute. Ligule an eciliate membrane; 1-2.2 mm long; entire, or erose; obtuse. Leaf-blades involute; 10-20 cm long; 1.5-2.5 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle open; linear; 4-15 cm long. Primary panicle branches appressed. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 7-12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 7-12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; without keels; 5 -veined. Lower glume apex acuminate. Upper glume lanceolate; 7-12 mm long; hyaline; without keels; 3-5 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma lanceolate; subterete; 5-7.5 mm long; 1.2 mm wide; coriaceous; light brown; without keel; 5 -veined. Lemma surface pubescent. Lemma margins convolute; covering most of palea. Lemma apex emarginate; awned; 1 -awned. Principal lemma awn bigeniculate; 18-29 mm long overall; with twisted column; limb limb glabrous, or puberulous. Middle segment of lemma awn pubescent. Column of lemma awn pubescent; with 0.5 mm long hairs. Palea 0.66 length of lemma; 2 -veined; without keels.
    Flowers
    Lodicules 3; 1.5 mm long. Anthers 3; 3-3.5 mm long; purple. Stigmas 2. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    North America: western Canada, northwest USA, and southwest USA.
    Reference
    Stipeae. Fl Pac NW 1994.

    Distribution

    Native to:

    Arizona, British Columbia, California, Idaho, Montana, Nevada, Oregon, Utah, Washington

    Stipa lemmonii (Vasey) Scribn. appears in other Kew resources:

    First published in Circ. Div. Agrostol. U.S.D.A. 30: 3 (1901)

    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.

    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 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