1. Family: Poaceae Barnhart
    1. Genus: Cortaderia Stapf
      1. Cortaderia roraimensis (N.E.Br.) Pilg.

        This species is accepted, and its native range is Colombia to S. Guyana.

    [CPLC]

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

    Distribution
    Nativa en Colombia; Alt. 2500 - 3500 m.
    Habit
    Hierba
    Conservation
    No Evaluada
    [GB]
    Habit
    Perennial; caespitose. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect, or geniculately ascending; 60-120 cm long; 1-1.5 mm diam.; 3-5 -noded. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs; 2-2.5 mm long. Leaf-blades convolute; 40-50 cm long; 3-4 mm wide. Leaf-blade margins scabrous.
    Inflorescences
    Gynodioecious (male, in this context, indicating the bisexual state). Inflorescence a panicle. Panicle open; elliptic; 12-15 cm long; 6 cm wide. Primary panicle branches 3-6 cm long. Panicle axis pilose. Panicle branches pilose. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 6-10 mm long; ciliate. Male inflorescence bisexual similar to female; a panicle. Male spikelets resembling female.
    Spikelets
    Spikelets comprising 3 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 9-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pilose. Floret callus hairs 1.5-2 mm long.
    Fertile
    Spikelets comprising 3 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 9-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pilose. Floret callus hairs 1.5-2 mm long.
    Glume
    Glumes similar; shorter than spikelet, or reaching apex of florets; similar to fertile lemma in texture; gaping. Lower glume linear; 9-9.5 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume margins ciliolate. Lower glume apex entire, or dentate; 2 -fid; obtuse. Upper glume linear; 9-9.5 mm long; 1.2 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume surface asperulous. Upper glume margins ciliolate. Upper glume apex dentate; 2 -fid; obtuse.
    Florets
    Fertile florets female. Fertile lemma lanceolate; 7-8 mm long; membranous; without keel; 3-5 -veined. Lemma surface scaberulous; plumose; hairy below. Lemma margins ciliate. Lemma hairs 3-4 mm long. Lemma apex lobed; 2 -fid; with filiform lobes; with lobes 0.5-1 mm long; acuminate; awned; 1 -awned. Principal lemma awn 7-11 mm long overall. Palea lanceolate; 5-5.5 mm long; 0.66 length of lemma; 2 -veined. Palea keels ciliolate. Palea surface pilose; hairy on flanks. Palea apex emarginate, or truncate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; fleshy. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Male
    Male inflorescence bisexual similar to female; a panicle. Male spikelets resembling female.
    Distribution
    South America: northern South America and Brazil.
    Reference
    Arundineae. Conert 1993.

    Images

    Distribution

    Native to:

    Brazil North, Colombia, Guyana, Venezuela

    Cortaderia roraimensis (N.E.Br.) Pilg. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1989 Nee, M. [30633], Venezuela K000709789
    Jul 1, 1958 McConnell, F.V. [673], Guyana K000709639 Unknown type material
    Jul 1, 1958 McConnell, F.V. [673], Guyana K000709640 Unknown type material
    McConnell, F.V. [673], Guyana K000709641

    First published in Notizbl. Königl. Bot. Gart. Berlin 6: 112 (1914)

    Accepted by

    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.

    Literature

    Kew Backbone Distributions
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.

    Sources

    Catálogo de Plantas y Líquenes de Colombia
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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