1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida villosa B.L.Rob. & Greenm.

        This species is accepted, and its native range is Galápagos.

    [GB]
    Habit
    Annual. Culms erect, or geniculately ascending; 15-35 cm long; 3-6 -noded. Culm-internodes terete; distally pubescent. Culm-nodes flush with internodes; glabrous. Lateral branches lacking, or sparse. Leaf-sheaths mostly shorter than adjacent culm internode; hirsute. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Collar glabrous, or pubescent. Leaf-blades flat, or convolute; 5-12 cm long; 2.5-3 mm wide; glaucous. Leaf-blade surface scaberulous; rough on both sides; pubescent; hairy on both sides. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 4-7 cm long. Primary panicle branches 1 -nate. Panicle axis pubescent. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; obtuse.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 4 mm long; membranous; 1-keeled; 3 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins obscure. Lower glume surface asperulous; rough on veins; glabrous, or puberulous. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 2 mm long. Upper glume lanceolate; 6 mm long; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume surface puberulous. Upper glume apex dentate; 2 -fid; awned; 1 -awned. Upper glume awn 2-3 mm long.
    Florets
    Fertile lemma ovate; subterete; 4 mm long; coriaceous; without keel; 3 -veined. Lemma surface scaberulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 9-15 mm long limb; with a straight or slightly twisted column; deciduous; abscissing from top of column. Column of lemma awn 1 mm long. Lateral lemma awns 5-6 mm long; shorter than principal.
    Distribution
    South America: western South America.
    Reference
    Aristideae. Henrard 1999.

    Images

    Distribution

    Native to:

    Galápagos

    Aristida villosa B.L.Rob. & Greenm. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Baur, G. [337], Galápagos K000308674

    First published in Amer. J. Sci., ser. 3, 50: 144 (1895)

    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.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.

    Literature

    Kew Backbone Distributions
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.

    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