1. Family: Poaceae Barnhart
    1. Genus: Mesosetum Steud.
      1. Mesosetum compressum Swallen

        This species is accepted, and its native range is N. Brazil.

    [GB]
    Habit
    Annual. Culms decumbent; 20-45 cm long; without nodal roots, or rooting from lower nodes. Culm-nodes pubescent. Leaf-sheaths glabrous on surface, or pubescent; outer margin hairy. Ligule a fringe of hairs; 1 mm long. Leaf-blades 3-13 cm long; 3-6 mm wide. Leaf-blade surface glabrous, or pubescent; hairy on both sides. Leaf-blade margins cartilaginous; tuberculate-ciliate.
    Inflorescences
    Inflorescence composed of racemes. Peduncle glabrous, or pubescent above. Racemes 1; single; unilateral; 5-6 cm long. Rhachis broadly winged; foliaceous; 2-2.2 mm wide; ciliate on margins. Spikelet packing adaxial; crowded. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 5-6 mm long; falling entire. Spikelet callus pubescent.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 5-6 mm long; falling entire. Spikelet callus pubescent.
    Glume
    Glumes dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 4.5-5 mm long; 0.8-0.9 length of spikelet; chartaceous; 1-keeled; 3 -veined. Lower glume surface scabrous. Lower glume apex dentate; 2 -fid; awned; 1 -awned. Lower glume awn 5-12 mm long. Upper glume lanceolate; 4.8-5 mm long; 0.8-0.9 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface scabrous; with marginal tufts of hair. Upper glume margins ciliate. Upper glume apex acute; mucronate, or awned; 1 -awned. Upper glume awn 0.5-1 mm long.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret oblong; 1 length of spikelet; membranous; 5 -veined; with marginal tufts of hair; 2 hair tufts in all; entire, or dentate; 3 -fid; obtuse. Fertile lemma ovate; dorsally compressed; 3.3 mm long; coriaceous; shiny; keeled; lightly keeled; 5 -veined. Lemma surface smooth. Lemma margins flat. Lemma apex acute. Palea coriaceous; without keels.
    Flowers
    Anthers 3; purple.
    Fruits
    Hilum linear; 1 length of caryopsis.
    Distribution
    South America: Brazil.
    Reference
    Paniceae. Filgueiras.

    Distribution

    Native to:

    Brazil North

    Mesosetum compressum Swallen appears in other Kew resources:

    First published in Brittonia 3: 367 (1937)

    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.

    Literature

    Kew Backbone Distributions
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.

    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 2019. 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 2019. 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