1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne rigidifolia (Poir.) Urb.

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

    [GB]
    Habit
    Perennial. Stolons present. Culms rambling; 15-40 cm long. Lateral branches ample. Leaves distichous. Leaf-sheaths longer than adjacent culm internode; glabrous on surface; outer margin hairy. Ligule a ciliate membrane. Leaf-blades lanceolate; 2-4 cm long; 2-4 mm wide; coriaceous; stiff. Leaf-blade midrib conspicuous. Leaf-blade margins cartilaginous. Leaf-blade apex pungent.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong; 2-5 cm long. Primary panicle branches ascending, or spreading. Panicle branches stiff. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-2 mm long.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; tilted on the pedicel; dorsally compressed; 2 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; tilted on the pedicel; dorsally compressed; 2 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume oblong; 0.9 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface glabrous, or pubescent; hairy above. Lower glume apex obtuse. Upper glume orbicular; 0.9 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface glabrous, or puberulous; hairy above. Upper glume apex obtuse.
    Florets
    Fertile lemma orbicular; 2 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: Caribbean.
    Reference
    Isachneae. N Amer Fl 1994.

    Images

    Distribution

    Native to:

    Cuba, Dominican Republic, Haiti, Leeward Is., Windward Is.

    Isachne rigidifolia (Poir.) Urb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dominican Republic K000643016
    s.coll. [265], Dominican Republic K000643015

    First published in Symb. Antill. 4: 85 (1903)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • 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
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.

    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 2019. 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 2019. 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