1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida repens Trin.

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

    [GB]
    Habit
    Annual. Culms decumbent; 15-50 cm long; rooting from lower nodes. Culm-internodes terete; smooth, or scaberulous. Lateral branches ample. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Collar glabrous. Leaf-blades flat, or convolute; 10-15 cm long; 1-1.5 mm wide. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 10-15 cm long. Primary panicle branches appressed; 1 -nate; 1-3 cm long; bearing spikelets almost to the base. Panicle axis angular; scaberulous. Panicle branches flexuous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5-1.5 mm long; pilose; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5-1.5 mm long; pilose; obtuse.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 5-7 mm long; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex attenuate. Upper glume lanceolate; 5-7 mm long; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex dentate; 2 -fid; mucronate.
    Florets
    Fertile lemma oblong; subterete; 3-5 mm long; coriaceous; without keel; 3 -veined. Lemma surface smooth, or scaberulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 5-10 mm long limb; with twisted column; deciduous; abscissing from top of column. Column of lemma awn 0.5-2.5 mm long. Lateral lemma awns 5-7 mm long; subequal to principal.
    Distribution
    Pacific: south-central (Henrard 1999). South America: western South America.
    Reference
    Aristideae.

    Images

    Distribution

    Native to:

    Galápagos, Marquesas

    Aristida repens Trin. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Douglas [s.n.], Galápagos K000308675

    First published in Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 1: 87 (1830)

    Accepted by

    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • 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
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, 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.

    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