1. Family: Poaceae Barnhart
    1. Genus: Perotis Aiton
      1. Perotis arenacea (Judz.) P.M.Peterson

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

    [GB]
    Habit
    Annual; caespitose; clumped loosely. Culms geniculately ascending; 15-35 cm long. Culm-internodes distally glabrous. Lateral branches lacking, or sparse. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.3-0.4 mm long; scaberulous on abaxial surface. Leaf-blade base amplexicaul. Leaf-blades lanceolate, or ovate; 0.8-4 cm long; 2-6 mm wide. Leaf-blade margins ciliate. Leaf-blade apex acute.
    Inflorescences
    Inflorescence composed of racemes; embraced at base by subtending leaf. Racemes 1; single; multilateral; 4-20 cm long; 1-1.6 mm wide. Spikelet packing irregular. Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels oblong; 0.2-0.3 mm long; tip cupuliform.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 1.3-1.8 mm long; falling entire. Spikelet callus base obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 1.3-1.8 mm long; falling entire. Spikelet callus base obtuse.
    Glume
    Glumes similar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1.3-1.8 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Lower glume apex obtuse, or acute. Upper glume elliptic; 1.3-1.8 mm long; 2-3 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume primary vein conspicuous. Upper glume lateral veins absent. Upper glume surface scabrous. Upper glume apex obtuse, or acute.
    Florets
    Fertile lemma lanceolate; 0.5-0.9 mm long; hyaline; keeled; lightly keeled; 1 -veined. Lemma apex attenuate.
    Flowers
    Anthers 2; 0.3-0.4 mm long; orange.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; laterally compressed; 1.3-1.4 mm long. Embryo 0.4 length of caryopsis. Hilum punctiform.
    Distribution
    Africa: western Indian ocean.
    Reference
    Cynodonteae. Judz. 2011.

    Distribution

    Native to:

    Madagascar

    Perotis arenacea (Judz.) P.M.Peterson appears in other Kew resources:

    First published in Taxon 63: 284 (2014)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • 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