1. Family: Poaceae Barnhart
    1. Genus: Cortaderia Stapf
      1. Cortaderia rudiuscula Stapf

        This species is accepted, and its native range is Peru to S. South America.

    [GB]
    Habit
    Perennial; caespitose. Culms 50-250 cm long. Leaf-sheaths outer margin hairy. Ligule a fringe of hairs; 0.5-2 mm long. Leaf-blades 100-185 cm long; 5-10 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous.
    Inflorescences
    Gynodioecious (male, in this context, indicating the bisexual state), or dioecious (by loss of viability in bisexual plants). Inflorescence a panicle. Panicle open; oblong; dense; 15-70 cm long. Primary panicle branches 20-35 cm long. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled. Pedicels filiform; scabrous. Male inflorescence nominally bisexual similar to female; a panicle. Male spikelets distinct from female (less hairy); hairy (hairs 2-3mm).
    Spikelets
    Spikelets comprising 2-5(-8) fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 10-16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 0.5 mm long; pilose.
    Fertile
    Spikelets comprising 2-5(-8) fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 10-16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 0.5 mm long; pilose.
    Glume
    Glumes similar; shorter than spikelet; similar to fertile lemma in texture; shiny. Lower glume lanceolate; 7-12 mm long; 1 length of upper glume; hyaline; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex entire, or dentate; 2 -fid; attenuate. Upper glume lanceolate; 9-13 mm long; 1 length of adjacent fertile lemma; hyaline; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex entire, or dentate; 2 -fid; attenuate.
    Florets
    Fertile florets female. Fertile lemma lanceolate; 9-12 mm long; hyaline; shiny; without keel; 3 -veined. Lemma surface villous. Lemma hairs 5-8 mm long. Lemma apex dentate; 2 -fid; acuminate; muticous, or mucronate, or awned; 1 -awned. Principal lemma awn from a sinus; 0-2 mm long overall. Palea 3.5-4.5 mm long; 0.33-0.5 length of lemma; hyaline; 2 -veined. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; 0.5 mm long; fleshy; ciliate. Anthers 3; 3 mm long. Staminodes present; 1-1.2 mm long.
    Fruits
    Caryopsis with adherent pericarp; 2.5 mm long.
    Male
    Male inflorescence nominally bisexual similar to female; a panicle. Male spikelets distinct from female (less hairy); hairy (hairs 2-3mm).
    Distribution
    South America: western South America and southern South America.
    Reference
    Arundineae. Fl Pat 1993.

    Images

    Distribution

    Native to:

    Argentina Northeast, Argentina Northwest, Argentina South, Bolivia, Chile Central, Chile North, Chile South, Peru

    Cortaderia rudiuscula Stapf appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 16, 1973 Cumming [386], Chile K000709857
    Jan 16, 1973 Cumming [386], Chile K000709858
    Jan 16, 1973 Gay, M.C. [s.n.], Chile K000709856
    Ball, J. [s.n.], Chile K000308161 Unknown type material
    Gonzales [19], Chile K000709853
    Beck, St. G. [4412], Bolivia K000709793
    Beck, St. G. [24805A], Bolivia K000709794
    Peterson, P.M. [15609], Chile K000709854
    Liberman, M. [1233], Bolivia K000709792
    Renvoize, S.A. [5341], Bolivia K000709790
    Renvoize, S.A. [5341], Bolivia K000709791
    Gay, M.C. [s.n.], Chile K000709855

    First published in Gard. Chron., ser. 3, 22: 396 (1897)

    Accepted by

    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    Not accepted by

    • Testoni, D. & Villamil, C.B. (2014). Estudios en al género Cortaderia (Poaceae). I. sistemática y nomenclature de la sect. Cortaderia Darwiniana, n.s., 2: 260-276. [Cited as Cortaderia speciosa.]

    Literature

    Kew Backbone Distributions
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    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