1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida guayllabambensis Laegaard

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

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Basal innovations intravaginal. Culms erect; 40-60 cm long; 0.5 mm diam. Culm-internodes striate; scaberulous; distally glabrous. Leaf-sheaths subequal to internodes; striately veined; glabrous on surface. Leaf-sheath oral hairs lacking, or ciliate; 1-2 mm long. Ligule a fringe of hairs; 0.2-0.4 mm long. Leaf-blades erect; convolute; 10-20 cm long; 2-2.5 mm wide. Leaf-blade surface ribbed; grooved adaxially; scaberulous; rough adaxially. Leaf-blade margins scabrous. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle; bracteate at branch bases. Panicle open; linear; 10-30 cm long; 1-2 cm wide; contracted about primary branches. Primary panicle branches appressed; 1 -nate; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 7-9 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.7 mm long; pubescent; acute. Floret callus hairs 0.3-0.7 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 7-9 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.7 mm long; pubescent; acute. Floret callus hairs 0.3-0.7 mm long.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 7-9 mm long; 1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute to attenuate. Upper glume lanceolate; 7-9 mm long; 1.4-1.8 length of adjacent fertile lemma; membranous; purple; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute to attenuate.
    Florets
    Fertile lemma linear; subterete; 5 mm long; 0.3-0.7 mm wide; coriaceous; without keel; 3 -veined. Lemma surface asperulous. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn with 10 mm long limb. Lateral lemma awns 6-10 mm long; subequal to principal, or shorter than principal. Palea oblanceolate; 0.5 mm long; 2 -veined.
    Flowers
    Lodicules 2; 0.6 mm long. Anthers 3; 2-2.5 mm long.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    South America: western South America.
    Reference
    Aristideae. Laegaard 2001.

    Images

    Distribution

    Native to:

    Ecuador

    Aristida guayllabambensis Laegaard appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Laegaard, S. [51740], Ecuador K000308684 isotype

    First published in Fl. Ecuador 57: 49 (1997)

    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