1. Family: Poaceae Barnhart
    1. Genus: Rostraria Trin.
      1. Rostraria balansae (Coss. & Durieu) Holub

        This species is accepted, and its native range is NW. Algeria (incl. Habibas Island).

    [GB]
    Habit
    Annual; caespitose. Culms erect, or geniculately ascending; 6-30 cm long. Lateral branches lacking, or sparse. Leaf-sheaths without keel; striately veined; pubescent. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane; 0.5-1.2 mm long; truncate. Leaf-blades linear, or lanceolate; 4-8 cm long; 2.5 mm wide; flaccid. Leaf-blade surface pubescent. Leaf-blade apex abruptly acute; hooded.
    Inflorescences
    Inflorescence a panicle; embraced at base by subtending leaf. Panicle spiciform; oblong; continuous, or interrupted; 1.5-5 cm long; 0.7-1.5 cm wide. Panicle axis pubescent. Panicle branches pubescent. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; pubescent.
    Spikelets
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent.
    Fertile
    Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent.
    Glume
    Glumes persistent; shorter than spikelet, or reaching apex of florets; similar to fertile lemma in texture; gaping. Lower glume lanceolate; 3 mm long; 0.75 length of upper glume; membranous; much thinner on margins; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface glabrous, or pubescent. Lower glume apex attenuate. Upper glume lanceolate; 4 mm long; 1.3 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume surface glabrous, or pubescent. Upper glume apex acute.
    Florets
    Fertile lemma oblong; 3 mm long; membranous; much thinner on margins; keeled; 3 -veined. Lemma surface pilose. Lemma apex dentate; 2 -fid; setaceously attenuate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.8 way up back of lemma; 2.5 mm long overall. Palea gaping; 2.5 mm long; hyaline. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; 0.6 mm long; membranous. Anthers 3; 1.2-1.8 mm long. Ovary glabrous.
    Distribution
    Africa: north.
    Reference
    Aveneae. Fl Afr N 1997.

    Images

    Distribution

    Native to:

    Algeria

    Recorded in error in:

    Morocco

    Rostraria balansae (Coss. & Durieu) Holub appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Balansa, B. [686], Algeria K000345044

    First published in Folia Geobot. Phytotax. 9: 271 (1974)

    Accepted by

    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • 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
    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.

    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