1. Family: Poaceae Barnhart
    1. Agenium Nees

      1. This genus is accepted, and its native range is Bolivia to Brazil and NE. Argentina.

    [GB]

    nonem

    Habit
    Perennial. Culms erect; slender (1/1); 15-65.83-120 cm long. Ligule an eciliate membrane (2), or a ciliolate membrane (1). Leaf-blades stiff (1), or firm (2).
    Inflorescences
    Inflorescence composed of racemes; terminal (2), or terminal and axillary (1). Racemes single (1), or paired (1), or digitate (2); erect (1), or drooping (2). Rhachis fragile at the nodes; flattened. Rhachis internodes linear. Rhachis internode tip oblique; flat. Raceme-bases brief (1), or filiform (1), or linear (1). Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform.
    Sterile
    Basal sterile spikelets well-developed. Companion sterile spikelets well-developed; separately deciduous. Companion sterile spikelet callus square (2), or cuneate (1).
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear (2), or lanceolate (1); subterete; 5-6.782-8 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate (1), or linear (2); pilose (1), or bearded (2); base pungent; attached obliquely. Basal sterile spikelets well-developed. Companion sterile spikelets well-developed; separately deciduous. Companion sterile spikelet callus square (2), or cuneate (1).
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear (2), or lanceolate (1); subterete; 5-6.782-8 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate (1), or linear (2); pilose (1), or bearded (2); base pungent; attached obliquely.
    Glume
    Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate (2), or elliptic (1); coriaceous; without keels; 8 -veined. Lower glume surface with a longitudinal median groove; pubescent (2), or pilose (1). Lower glume apex obtuse. Upper glume lanceolate; coriaceous; without keels. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic (2), or oblong (1); hyaline; 2 -veined (1/1); truncate (2/2). Fertile lemma linear; cartilaginous; without keel; 1 -veined. Lemma apex acute; awned; 1 -awned. Principal lemma awn geniculate. Column of lemma awn glabrous (1), or pubescent (2). Palea absent or minute.
    Distribution
    South America.

    Images

    Distribution

    Native to:

    Argentina Northeast, Bolivia, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Paraguay, Uruguay

    Agenium Nees appears in other Kew resources:

    First published in J.Lindley, Intr. Nat. Syst. Bot., ed. 2: 447 (1836)

    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 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