1. Family: Poaceae Barnhart
    1. Genus: Danthonia DC.
      1. Danthonia chaseana Conert

        This species is accepted, and its native range is Brazil (Minas Gerais).

    [GB]
    Habit
    Perennial. Basal innovations extravaginal. Culms erect; 15-37 cm long; 2-4 -noded. Leaf-sheaths pilose. Leaf-sheath oral hairs ciliate; 3.5 mm long. Ligule a fringe of hairs; 0.2-0.6 mm long. Leaf-blades 5-11 cm long; 0.8-1.2 mm wide. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence a panicle, or comprising only a few spikelets; comprising 3-15 fertile spikelets. Peduncle glabrous. Panicle open; linear; 1.6-6 cm long; bearing few spikelets. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2.5-16.5 mm long; glabrous.
    Spikelets
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 7-9.2 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.7-1.2 mm long; glabrous. Floret callus evident; 0.4-0.5 mm long; pilose. Floret callus hairs 0.3-1.3 mm long.
    Fertile
    Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 7-9.2 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.7-1.2 mm long; glabrous. Floret callus evident; 0.4-0.5 mm long; pilose. Floret callus hairs 0.3-1.3 mm long.
    Glume
    Glumes persistent; similar; reaching apex of florets, or exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 4-8 mm long; 1.1-1.2 length of upper glume; membranous; without keels; 3 -veined. Lower glume apex acuminate. Upper glume lanceolate; 3.5-6.5 mm long; 0.75-1.2 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma elliptic; 4.5-5.5 mm long; chartaceous; without keel. Lemma surface pubescent; hairy below; with marginal hair tufts; bearing 2 hair tufts in all. Lemma hairs 0.6 mm long. Lemma apex lobed; 2 -fid; with lobes 1.2-2.8 mm long; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; 3.5-5.3 mm long overall; with twisted column. Lateral lemma awns arising on apex of lobes; 0.3-1.5 mm long; shorter than principal. Palea lanceolate; 3-4 mm long; 2 -veined. Palea surface pilose; hairy on back. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; 0.4-0.6 mm long; fleshy; glabrous. Anthers 3; 1.7-2.1 mm long.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 1.5-2 mm long; dark brown. Embryo 0.5 length of caryopsis. Hilum linear; 0.3 length of caryopsis.
    Distribution
    South America: Brazil.
    Reference
    Arundineae. Baezu 1997.

    Images

    Distribution

    Native to:

    Brazil Southeast

    Danthonia chaseana Conert appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1992 Castellanes, A. [22670], Brazil K000702442

    First published in Senckenberg. Biol. 56: 308 (1975)

    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

    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 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