1. Family: Poaceae Barnhart
    1. Zeugites P.Browne

      1. This genus is accepted, and its native range is Mexico to Bolivia, Caribbean.

    [GB]

    nonem

    Habit
    Annual (1), or perennial (9). Rhizomes absent (8), or short (2), or elongated (1). Culms erect (8), or geniculately ascending (2), or rambling (2); robust (2/3), or slender (1/3); 25-154.3-400 cm long; firm (9), or wiry (1). Lateral branches lacking (1/6), or sparse (3/6), or ample (2/6). Leaf-sheath auricles absent (8), or erect (2). Ligule an eciliate membrane (9), or a ciliolate membrane (1). Leaf-blade base with a brief petiole-like connection to sheath (4), or with a false petiole (6). Leaf-blades lanceolate (5), or elliptic (4), or oblong (2), or ovate (3). Leaf-blade venation with distinct cross veins.
    Inflorescences
    Inflorescence a panicle; terminal (9), or terminal and axillary (1). Panicle open. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; tip cupuliform (1/1).
    Spikelets
    Spikelets comprising 1 fertile florets, or 2 fertile florets (1); with diminished florets at the apex. Spikelets elliptic (1), or oblong (7), or ovate (3); laterally compressed; 5-10.3-20 mm long; falling entire. Rhachilla internodes brief up to lowest fertile floret (8), or elongated between glumes (2). Floret callus pubescent (1/1).
    Fertile
    Spikelets comprising 1 fertile florets, or 2 fertile florets (1); with diminished florets at the apex. Spikelets elliptic (1), or oblong (7), or ovate (3); laterally compressed; 5-10.3-20 mm long; falling entire. Rhachilla internodes brief up to lowest fertile floret (8), or elongated between glumes (2). Floret callus pubescent (1/1).
    Glume
    Glumes shorter than spikelet (9), or reaching apex of florets (2); thinner than fertile lemma. Lower glume oblong (1), or orbicular (1), or obovate (8); not gibbous (9), or gibbous (1); 1-1.19-2.5 length of upper glume; membranous; 1-keeled; 5-6 -veined (1), or 7 -veined (6), or 8 -veined (3), or 9 -veined (7), or 10-11 -veined (3). Lower glume surface glabrous (8), or pubescent (3). Lower glume apex entire (6), or erose (2), or dentate (2); 3-5 -fid (1/2), or 7 -fid (1/2); truncate (5/6), or obtuse (1/6). Upper glume oblong (3), or obovate (5), or cuneate (2); not gibbous (7), or gibbous (3); 0.66-0.7345-1 length of adjacent fertile lemma; membranous; 1-keeled; 3-5 -veined (3), or 7 -veined (6), or 8-9 -veined (3), or 10-11 -veined (1). Upper glume lateral veins with cross-veins. Upper glume surface glabrous (8), or puberulous (1), or pubescent (2). Upper glume apex entire (7), or erose (3); truncate (6/9), or obtuse (2/9), or acute (1/9).
    Florets
    Fertile florets female. Fertile lemma oblong (5), or ovate (3), or oblate (1), or obovate (1); not gibbous (1), or gibbous (9); cartilaginous; keeled; 7 -veined (2/6), or 8 -veined (1/6), or 9 -veined (4/6), or 10 -veined (3/6), or 11 -veined (4/6), or 12-13 -veined (1/6). Lemma surface smooth (9), or asperulous (2); glabrous (9), or puberulous (1). Lemma margins eciliate (9), or ciliolate (1). Lemma apex entire (8), or erose (2); emarginate (1), or truncate (2), or obtuse (4), or acute (2), or rostrate (2); without ornament (8), or pubescent (2); muticous, or mucronate (1). Palea 0.9-1-1.1 length of lemma. Palea keels eciliate (9), or ciliate (1). Apical sterile florets 1-6-14 in number; male; elliptic (1), or ovate (9). Apical sterile lemmas muticous, or mucronate (1).
    Flowers
    Lodicules 2 (1/1). Anthers 3.
    Fruits
    Caryopsis with adherent pericarp (8/8); fusiform (1/2), or orbicular (1/2).
    Distribution
    North America (9), or South America (4).
    [GB]

    nonem

    Habit
    Perennial. Rhizomes short. Culms erect; 30-60 cm long. Ligule an eciliate membrane. Leaf-blade base with a false petiole. Leaf-blades lanceolate. Leaf-blade venation with distinct cross veins.
    Inflorescences
    Inflorescence composed of racemes. Racemes single; paucilateral; bearing few fertile spikelets; bearing 6-7 fertile spikelets on each. Rhachis subterete. Spikelet packing broadside to rhachis; lax. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.
    Spikelets
    Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or cuneate; laterally compressed; gibbous; 6.64-9.6 mm long; falling entire.
    Fertile
    Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or cuneate; laterally compressed; gibbous; 6.64-9.6 mm long; falling entire.
    Glume
    Glumes shorter than spikelet. Lower glume elliptic; 1.4 length of upper glume; herbaceous; without keels; 15-16 -veined. Lower glume lateral veins ribbed. Lower glume surface pilose. Lower glume apex obtuse. Upper glume ovate; 1 length of adjacent fertile lemma; herbaceous; without keels; 10-11 -veined. Upper glume lateral veins ribbed; with cross-veins. Upper glume surface pilose. Upper glume apex obtuse.
    Florets
    Fertile florets female. Fertile lemma oblate; gibbous; herbaceous; without keel; 15-19 -veined. Lemma lateral veins ribbed. Lemma surface pilose; hairy between veins. Lemma margins connate below. Lemma apex obtuse. Palea 2 -veined. Palea keels winged. Apical sterile florets 2-4 in number; male; lanceolate.
    Flowers
    Lodicules 2; fleshy. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; oblong; laterally compressed. Hilum punctiform.
    Distribution
    South America.

    Images

    Distribution

    Native to:

    Bolivia, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Guatemala, Haiti, Honduras, Jamaica, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Peru, Venezuela

    Zeugites P.Browne appears in other Kew resources:

    First published in Civ. Nat. Hist. Jamaica: 341 (1756)

    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