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  1. Family: Poaceae Barnhart
    1. Triniochloa Hitchc.

      1. This genus is accepted, and its native range is Mexico to W. South America and Venezuela.

    [GB]

    nonem

    Habit
    Perennial. Rhizomes absent (4), or elongated (2). Culms erect (2/4), or geniculately ascending (1/4), or decumbent (2/4); robust (1/2), or slender (1/2); 30-59.58-135 cm long. Leaf-sheaths tubular for much of their length. Ligule an eciliate membrane. Leaf-blades persistent (5), or deciduous at the ligule (1); filiform (2), or linear (4).
    Inflorescences
    Inflorescence a panicle. Panicle open (4), or contracted (2). Primary panicle branches not whorled (5), or whorled at most nodes (1). Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels filiform (5/5).
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear (4), or lanceolate (2); subterete (4), or dorsally compressed (2); 9-12.1-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear (4), or lanceolate (2); subterete (4), or dorsally compressed (2); 9-12.1-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded.
    Glume
    Glumes persistent; shorter than spikelet (2), or reaching apex of florets (4); thinner than fertile lemma. Lower glume lanceolate (4), or ovate (2); 0.66-0.8133-1 length of upper glume; hyaline (4), or membranous (2); without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute (3), or acuminate (3). Upper glume lanceolate (4), or ovate (2); 0.25-0.765-1 length of adjacent fertile lemma; hyaline (4), or membranous (2); with undifferentiated margins (5), or hyaline margins (1); without keels; 1 -veined (3), or 3 -veined (3). Upper glume apex acute (3), or acuminate (3).
    Florets
    Fertile lemma ovate; subterete (1/1); coriaceous; without keel; 5 -veined (2), or 7 -veined (4), or 8-9 -veined (2). Lemma surface smooth (5), or asperulous (1), or scabrous (2). Lemma margins flat (2), or involute (4); exposing palea (2), or interlocking with palea keels (4). Lemma apex dentate (4), or lobed (2); 2 -fid; incised 0.1-0.175-0.25 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus (1), or dorsal (5); geniculate. Palea 1 length of lemma; membranous (2), or coriaceous (4). Palea keels separated (2), or contiguous above a sulcus (4); smooth (5), or scabrous (1). Palea apex dentate (2/2).
    Flowers
    Lodicules 2; united; fleshy; truncate. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp (1/1). Hilum linear (1/1); 1 length of caryopsis.
    Distribution
    North America (5), or South America (2).

    Images

    Distribution

    Native to:

    Bolivia, Colombia, Costa Rica, Ecuador, Guatemala, Honduras, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest, Peru, Venezuela

    Accepted Species

    Other Data

    Triniochloa Hitchc. appears in other Kew resources:

    Bibliography

    First published in Contr. U.S. Natl. Herb. 17: 303 (1913)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

    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 2020. 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 2020. 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