1. Family: Poaceae Barnhart
    1. Genus: Puccinellia Parl.
      1. Puccinellia simplex Scribn.

        This species is accepted, and its native range is Central California, N. Utah.

    [GB]
    Habit
    Annual; caespitose. Culms 7-20 cm long; 1-3 -noded. Leaf-sheaths open for most of their length. Ligule an eciliate membrane. Leaf-blades 2-4 cm long; 0.5-1.5 mm wide.
    Inflorescences
    Inflorescence a panicle, or composed of racemes (when depauperate). Panicle contracted; linear; secund; 1-12 cm long. Primary panicle branches appressed; bearing spikelets almost to the base. Panicle branches stiff. Racemes 1; single; unilateral. Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels oblong.
    Spikelets
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 6-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; eventually visible between lemmas.
    Fertile
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 6-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; eventually visible between lemmas.
    Glume
    Glumes persistent; dissimilar; shorter than spikelet. Lower glume lanceolate; 1-2 mm long; 0.5 length of upper glume; herbaceous; without keels; 3 -veined. Lower glume apex obtuse. Upper glume lanceolate; 2-3 mm long; 0.7-0.8 length of adjacent fertile lemma; herbaceous; without keels; 3 -veined. Upper glume lateral veins thickened. Upper glume apex obtuse.
    Florets
    Fertile lemma elliptic; 3.5 mm long; chartaceous; much thinner above; much thinner on margins; without keel; 5 -veined. Lemma lateral veins stopping well short of apex. Lemma surface pubescent. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    North America: southwest USA.
    Reference
    Poeae. WDC.

    Distribution

    Native to:

    California, Utah

    Puccinellia simplex Scribn. appears in other Kew resources:

    First published in Circ. Div. Agrostol. U.S.D.A. 16: 1 (1899)

    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 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