1. Family: Poaceae Barnhart
    1. Scleropogon Phil.

      1. This genus is accepted, and its native range is SW. & W. Central U.S.A. to Mexico, NW. Argentina.

    [GB]

    nonem

    Habit
    Perennial. Stolons present. Culms 10-25 cm long. Ligule a fringe of hairs.
    Inflorescences
    Monoecious, or dioecious; with male and female spikelets in the same inflorescence, or with male and female spikelets in different inflorescences. Inflorescence composed of racemes. Racemes single; bearing few fertile spikelets; bearing 2-8 fertile spikelets on each. Spikelet packing crowded. Spikelets solitary. Fertile spikelets sessile. Male spikelets pedicelled. Male inflorescence terminal; unlike female; a panicle, or a single raceme. Male spikelets oblong. Male spikelet glumes 2; muticous. Male spikelet lemma muticous.
    Spikelets
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets linear; subterete; 25-30 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Floret callus elongated; pilose; pungent.
    Fertile
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets linear; subterete; 25-30 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Floret callus elongated; pilose; pungent.
    Glume
    Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 0.5 length of upper glume; membranous; without keels; 3 -veined. Lower glume apex acuminate. Upper glume lanceolate; 1-1.1 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acuminate.
    Florets
    Fertile florets female. Fertile lemma oblong; subterete; coriaceous; without keel; 3 -veined. Lemma margins convolute. Lemma apex awned; 3 -awned. Lateral lemma awns subequal to principal. Palea 2 -veined. Palea apex awned. Apical sterile florets 1-3 in number; barren; in a clump; rudimentary. Apical sterile lemmas awned.
    Flowers
    Lodicules absent.
    Male
    Male inflorescence terminal; unlike female; a panicle, or a single raceme. Male spikelets oblong. Male spikelet glumes 2; muticous. Male spikelet lemma muticous.
    Distribution
    North America, or South America.

    Images

    Distribution

    Native to:

    Argentina Northwest, Arizona, California, Colorado, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, New Mexico, Oklahoma, Texas, Utah

    Scleropogon Phil. appears in other Kew resources:

    First published in Anales Univ. Chile 36: 205 (1870)

    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