1. Family: Poaceae Barnhart
    1. Genus: Munroa Torr.
      1. Munroa squarrosa (Nutt.) Torr.

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

    [GB]
    Habit
    Annual; mat forming. Stolons present. Culms decumbent; 10-15 cm long. Culm-internodes alternately elongated and bunched; antrorsely scabrous. Lateral branches ample. Ligule a fringe of hairs. Leaf-blades flat, or conduplicate; 1-5 cm long; 1-2.5 mm wide; stiff. Leaf-blade margins cartilaginous; scabrous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence comprising only a few spikelets; comprising 2-3 fertile spikelets; terminal and axillary (in a leafy fascicle); shorter than basal leaves; embraced at base by subtending leaf. Spikelets solitary. Fertile spikelets sessile; heteromorphic (uppermost smaller and lacking lower glume).
    Spikelets
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 7-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Fertile
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 7-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Glume
    Glumes persistent; dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume linear; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma elliptic; 6-9 mm long; chartaceous; without keel; 3 -veined. Lemma lateral veins excurrent, or extending close to apex. Lemma surface granulose. Lemma margins ciliate; hairy in the middle. Lemma apex truncate; awned; 1 -awned. Principal lemma awn from a sinus; 0.5-1.5 mm long overall. Palea surface glabrous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3. Stigmas 2; papillose.
    Fruits
    Caryopsis with adherent pericarp; ovoid; laterally compressed; smooth (translucent). Embryo projecting below grain.
    Distribution
    North America: western Canada, northwest USA, north-central USA, southwest USA, south-central USA, and Mexico.
    Reference
    Eragrostideae. Gould.

    Distribution

    Native to:

    Alberta, Arizona, California, Colorado, Kansas, Manitoba, Mexico Northeast, Minnesota, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, Saskatchewan, South Dakota, Texas, Utah, Wyoming

    Munroa squarrosa (Nutt.) Torr. appears in other Kew resources:

    First published in Pacif. Railr. Rep. Whipple, Bot. 4(5; 4): 158 (1857)

    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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. 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