1. Family: Poaceae Barnhart
    1. Uniola L.

      1. This genus is accepted, and its native range is SE. U.S.A. to Central America, Caribbean, Venezuela to W. South America.

    [GB]

    nonem

    Habit
    Perennial. Rhizomes absent (2), or short (1), or elongated (2). Stolons absent (4), or present (1). Culms erect; 75-133-200 cm long. Lateral branches lacking (1/1). Leaves differentiated into sheath and blade (4), or without demarcation between sheath and blade (1). Ligule a fringe of hairs (4), or absent (1). Leaf-blades herbaceous (1), or coriaceous (4); stiff (4), or firm (1).
    Inflorescences
    Inflorescence composed of racemes. Racemes borne along a central axis; not compacted (4), or in a multilateral false spike (1); unilateral (4), or paucilateral (1). Rhachis angular (2/2). Spikelet packing broadside to rhachis; crowded; 2 -rowed (3/3). Spikelets solitary (3), or in pairs (2). Fertile spikelets sessile (4), or pedicelled (1); 2 in the cluster (1/1). Pedicels oblong (2/2).
    Spikelets
    Spikelets comprising 1 basal sterile florets (3), or 2-3 basal sterile florets, or 4-5 basal sterile florets (3), or 6 basal sterile florets (2); 1-2 fertile florets (1), or 3-6 fertile florets (2), or 7 fertile florets (1), or 10-11 fertile florets (2), or 12 fertile florets (3), or 13-15 fertile florets (2), or 16-20 fertile florets (1); with diminished florets at the apex. Spikelets ovate; laterally compressed; 4-11.9-35 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets (3), or 2-3 basal sterile florets, or 4-5 basal sterile florets (3), or 6 basal sterile florets (2); 1-2 fertile florets (1), or 3-6 fertile florets (2), or 7 fertile florets (1), or 10-11 fertile florets (2), or 12 fertile florets (3), or 13-15 fertile florets (2), or 16-20 fertile florets (1); with diminished florets at the apex. Spikelets ovate; laterally compressed; 4-11.9-35 mm long; falling entire.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate (4), or ovate (1); 0.66-0.891-1 length of upper glume; membranous (2), or chartaceous (3); 1-keeled; wingless (4), or winged on keel (1); 1 -veined (3), or 3 -veined (2). Lower glume lateral veins absent (3), or distinct (2). Lower glume surface glabrous, or puberulous (1). Lower glume apex acute (4), or acuminate (1); muticous, or mucronate (1). Upper glume lanceolate (4), or ovate (1); 0.3-0.664-1 length of adjacent fertile lemma; membranous (2), or chartaceous (3); 1-keeled; wingless (4), or winged on keel (1); 1 -veined (3), or 3 -veined (1), or 5 -veined (1). Upper glume surface glabrous, or puberulous (1). Upper glume apex acute (4), or acuminate (1); muticous, or mucronate (1).
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate (1), or elliptic (1), or ovate (4); coriaceous (4/4); 3-4 -veined (1/4), or 5 -veined (4/4), or 6-7 -veined (2/4), or 8-9 -veined (1/4); acute (4/4). Fertile lemma elliptic (2), or ovate (4); cartilaginous (1), or coriaceous (4); of similar consistency on margins (4), or much thinner on margins (1); keeled; 3-4 -veined (2), or 5 -veined, or 6-7 -veined (2), or 8-9 -veined (1). Lemma midvein without distinctive roughness (1), or scabrous (4). Lemma lateral veins obscure (1/2), or distinct (1/2). Lemma surface glabrous, or puberulous (1). Lemma margins eciliate (4), or ciliolate (2). Lemma apex truncate (1), or obtuse (1), or acute (3), or acuminate (1); muticous (4), or mucronate (3). Palea 0.75-0.9167-1.1 length of lemma; 2 -veined. Palea keels wingless (3), or winged (2); smooth (3), or scaberulous (1), or scabrous (1); eciliate (3), or ciliolate (2). Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2 (1/1). Anthers 3.
    Fruits
    Caryopsis with adherent pericarp (4/4); ellipsoid (2/4), or oblong (1/4), or ovoid (2/4); isodiametric (1/1). Embryo 0.5 length of caryopsis.
    Distribution
    Australasia (1), or North America (2), or South America.

    Images

    Distribution

    Native to:

    Alabama, Bahamas, Colombia, Costa Rica, Cuba, Delaware, Dominican Republic, Ecuador, El Salvador, Florida, Galápagos, Georgia, Guatemala, Haiti, Honduras, Jamaica, Leeward Is., Louisiana, Maryland, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mississippi, Nicaragua, North Carolina, Panamá, Peru, Puerto Rico, South Carolina, Texas, Turks-Caicos Is., Venezuela, Virginia

    Uniola L. appears in other Kew resources:

    First published in Sp. Pl.: 71 (1753)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the 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