1. Family: Poaceae Barnhart
    1. Genus: Yvesia A.Camus
      1. Yvesia madagascariensis A.Camus

        This species is accepted, and its native range is Madagascar.

    [GB]
    Habit
    Annual. Culms erect, or geniculately ascending; 15-20 cm long. Ligule a fringe of hairs. Leaf-blades lanceolate; 1-2 cm long; 3 mm wide. Leaf-blade margins tuberculate-ciliate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 3-5; digitate; flexuous; paucilateral; 1-2 cm long; bearing few fertile spikelets; bearing 5-6 fertile spikelets on each. Rhachis subterete. Spikelet packing adaxial; distant; irregular. Spikelets ascending; solitary. Fertile spikelets pedicelled. Pedicels oblong; 0.4-0.8 mm long.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 2.5 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 2.5 mm long; falling entire.
    Glume
    Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume lanceolate; 2.5 mm long; membranous; without keels. Upper glume surface pilose. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; lanceolate; 2.5 mm long; 1 length of spikelet; membranous; pilose; acute. Fertile lemma oblong; 1.8-2 mm long; coriaceous; pallid; shiny; without keel. Lemma margins involute. Lemma apex acute; mucronate. Palea coriaceous.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 1.2 mm long.
    Distribution
    Africa: western Indian ocean.
    Reference
    Paniceae. WDC.

    Images

    Distribution

    Native to:

    Madagascar

    Yvesia madagascariensis A.Camus appears in other Kew resources:

    Date Identified Reference Herbarium Specimen Type Status
    Perrier de la Bâthie, J.M.H.A. [13010], Madagascar K000244676
    Perrier de la Bâthie, J.M.H.A. [17619], Madagascar K000244681

    First published in Bull. Soc. Bot. France 73: 690 (1926 publ. 1927)

    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
    [A]
    [B] 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/
    [C] © 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/
    [D] © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0