1. Family: Poaceae Barnhart
    1. Genus: Mesosetum Steud.
      1. Mesosetum chaseae Luces

        This species is accepted, and its native range is N. South America to Paraguay.

    [GB]
    Habit
    Perennial. Rhizomes elongated. Stolons present. Culms erect; 25-65 cm long. Culm-nodes pubescent. Leaf-sheaths glabrous on surface; outer margin hairy. Ligule a fringe of hairs; 0.5 mm long. Leaf-blades flat, or involute; 3-20 cm long; 2-7 mm wide. Leaf-blade surface glabrous, or pilose. Leaf-blade margins scabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; unilateral; 3-9 cm long. Rhachis narrowly winged; angular; 1-1.5 mm wide; scabrous on margins. Spikelet packing adaxial. Spikelets solitary. Fertile spikelets pedicelled. Pedicels fused to internode; oblong; 1 mm long; ciliate.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 3.5-5.5 mm long; falling entire. Spikelet callus pubescent.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 3.5-5.5 mm long; falling entire. Spikelet callus pubescent.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 3.5-5.5 mm long; 1 length of spikelet; chartaceous; 1-keeled; 3 -veined. Lower glume apex emarginate; mucronate, or awned; 1 -awned. Lower glume awn 0-2 mm long. Upper glume lanceolate; 3.5-5 mm long; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume margins scabrous; ciliate. Upper glume apex emarginate.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret oblong; 1 length of spikelet; membranous; thicker on margins; 7 -veined; eciliate on margins, or ciliate on margins; laterally pinched at apex. Fertile lemma ovate; dorsally compressed; 3-4.5 mm long; coriaceous; without keel; 5 -veined. Lemma margins flat. Lemma apex acute. Palea coriaceous; without keels.
    Flowers
    Anthers 3; purple.
    Fruits
    Hilum linear; 1 length of caryopsis.
    Distribution
    South America: northern South America, Brazil, and southern South America.
    Reference
    Paniceae. Filgueiras.

    Images

    Distribution

    Native to:

    Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Guyana, Paraguay, Venezuela

    Mesosetum chaseae Luces appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1989 Melville [[105]], Guyana K000643306 paratype
    Melo, E. [s.n.], Brazil K001059289

    First published in J. Washington Acad. Sci. 32: 160 (1942)

    Accepted by

    • da Silva, A.S. & al. (2016). Eleven new records of little known taxa of Mesosetum and Paspalum (Poaceae) from Brazil and Bolivia Phytotaxa 268: 69-79.
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.

    Literature

    Kew Backbone Distributions
    • da Silva, A.S. & al. (2016). Eleven new records of little known taxa of Mesosetum and Paspalum (Poaceae) from Brazil and Bolivia Phytotaxa 268: 69-79.
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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