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  1. Family: Poaceae Barnhart
    1. Genus: Hyperthelia Clayton
      1. Hyperthelia kottoensis Desc. & Mazade

        This species is accepted, and its native range is Central African Republic.

    [GB]
    Habit
    Perennial. Culms erect; 120-180 cm long. Culm-nodes bearded. Leaf-sheaths mostly shorter than adjacent culm internode. Leaf-sheath oral hairs bearded. Ligule an eciliate membrane; 2.5 mm long; obtuse. Leaf-blades 20-40 cm long; 6-10 mm wide. Leaf-blade surface pubescent, or pilose; hairy on both sides.
    Inflorescences
    Synflorescence compound; paniculate; 20-50 cm long. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole; exserted. Spatheole lanceolate; 2-4 cm long; scarious. Peduncle 4-10 cm long; pilose above. Racemes 2; paired; deflexed; bearing few fertile spikelets; bearing 1 fertile spikelets on each. Rhachis fragile at the nodes. Rhachis internodes filiform. Rhachis internode tip oblique; flat. Raceme-bases filiform; unequal (the longer measured); 1.3-2 mm long; extended into an oblong appendage; with 3.5-5.5 mm long appendage. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; 1.5-2 mm long; ciliate; tip oblique.
    Spikelets
    Basal sterile spikelets well-developed; lower raceme 2 in number; 0 in upper raceme; lanceolate; 6.5-10 mm long; equalling fertile. Basal sterile spikelet lower glume muticous. Companion sterile spikelets well-developed; lanceolate; 8-14 mm long; as long as fertile. Companion sterile spikelet callus cuneate; 0.3-0.7 mm long; acute. Companion sterile spikelet glumes coriaceous; 9-11 -veined; puberulous; awned; both glumes awned; with 1-3 mm long awn. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 8-11 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 2 mm long; pubescent; base pungent; attached obliquely.
    Sterile
    Basal sterile spikelets well-developed; lower raceme 2 in number; 0 in upper raceme; lanceolate; 6.5-10 mm long; equalling fertile. Basal sterile spikelet lower glume muticous. Companion sterile spikelets well-developed; lanceolate; 8-14 mm long; as long as fertile. Companion sterile spikelet callus cuneate; 0.3-0.7 mm long; acute. Companion sterile spikelet glumes coriaceous; 9-11 -veined; puberulous; awned; both glumes awned; with 1-3 mm long awn.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 8-11 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 2 mm long; pubescent; base pungent; attached obliquely.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; coriaceous; much thinner above; without keels; 6 -veined. Lower glume surface with a longitudinal median groove; puberulous; hairy above. Lower glume apex dentate; 2 -fid. Upper glume oblong; coriaceous; without keels; keel-less except near apex; 3 -veined. Upper glume awned; 1 -awned. Upper glume awn 1-1.5 mm long.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret hyaline. Fertile lemma linear; 5 mm long; hyaline; without keel. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 40-60 mm long overall; with twisted column. Column of lemma awn puberulous; with 0.1-0.2 mm long hairs. Palea absent or minute.
    Flowers
    Anthers 3; 3 mm long.
    Distribution
    Africa: west-central tropical.
    Reference
    Andropogoneae. Descoings & Mazade 2005.

    Distribution

    Native to:

    Central African Repu

    Other Data

    Hyperthelia kottoensis Desc. & Mazade appears in other Kew resources:

    Bibliography

    First published in Bull. Soc. Bot. France, Lett. Bot. 134: 203 (1987)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy 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