1. Family: Poaceae Barnhart
    1. Genus: Danthonia DC.
      1. Danthonia rugoloana Sulekic

        This species is accepted, and its native range is Argentina (Salta).

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Rhizomes short. Culms erect; 4-16 cm long; 1 -noded. Culm-nodes glabrous, or pubescent. Leaf-sheaths striately veined; glabrous on surface, or pilose. Ligule a fringe of hairs; 0.3-0.6 mm long. Leaf-blades curved; filiform; involute; 0.3-0.6 cm long; 0.5-1 mm wide. Leaf-blade surface scaberulous; rough abaxially; pilose; hairy adaxially. Leaf-blade apex acute; hooded.
    Inflorescences
    Inflorescence comprising only a few spikelets; comprising 1-3 fertile spikelets; bracteate at pedicel base. Peduncle hirsute above. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2-8 mm long; ciliate.
    Spikelets
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 10-14 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.4-0.7 mm long; pilose; truncate, or obtuse. Floret callus hairs 1-2.5 mm long.
    Fertile
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 10-14 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.4-0.7 mm long; pilose; truncate, or obtuse. Floret callus hairs 1-2.5 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 10-14 mm long; 1 length of upper glume; membranous; much thinner on margins; without keels; 3-7 -veined. Lower glume lateral veins obscure. Lower glume surface smooth, or asperulous; rough on veins. Lower glume apex acute, or acuminate. Upper glume lanceolate; 10-14 mm long; 1.6-2 length of adjacent fertile lemma; membranous; with hyaline margins; without keels; 3-7 -veined. Upper glume lateral veins obscure. Upper glume surface smooth, or asperulous; rough on veins. Upper glume apex acute, or acuminate.
    Florets
    Fertile lemma elliptic; 6-7.6 mm long; coriaceous; much thinner on margins; without keel; 7-9(-11) -veined. Lemma midvein ciliate. Lemma surface pilose; hairy below. Lemma margins ciliate. Lemma hairs 1-2.3 mm long. Lemma apex lobed; 2 -fid; with lobes 3-4.5 mm long; incised 0.5-0.6 of lemma length; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; flat below; 5.5-7.5 mm long overall; with twisted column. Lateral lemma awns arising on apex of lobes; 0.5-2 mm long. Palea elliptic; 3.7-5 mm long; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; 0.4-0.7 mm long; fleshy; ciliate. Anthers 3; 0.2-0.5 mm long; retained within floret.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 1.7-2.3 mm long; light brown. Embryo 0.5 length of caryopsis. Hilum elliptic; 0.33 length of caryopsis.
    Cleistogene
    Cleistogenes present; in lower sheaths; 1 -flowered; 4.5 mm long.
    Distribution
    South America: southern South America.
    Reference
    Arundineae. Sulecik 2005.

    Distribution

    Native to:

    Argentina Northwest

    Danthonia rugoloana Sulekic appears in other Kew resources:

    First published in Darwiniana 37: 341 (1999)

    Accepted by

    • 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.
    • 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
    • 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.

    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