Skip to main content
  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis heterophylla (Wedd.) Pilg.

        This species is accepted, and its native range is NW. Venezuela to NW. Argentina.

    [GB]
    Habit
    Perennial. Culms erect, or geniculately ascending; 8-60 cm long. Leaf-sheaths glabrous on surface, or puberulous. Ligule an eciliate membrane; 1.5-4 mm long; truncate. Leaf-blades 3-15 cm long; 2-5 mm wide. Leaf-blade surface pubescent; hairy on both sides.
    Inflorescences
    Inflorescence a panicle. Panicle contracted, or spiciform; linear; 2-20 cm long; 0.6-2 cm wide. Primary panicle branches appressed, or ascending; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled. Pedicels puberulous.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.5-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.4-1 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.5-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.4-1 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; light green, or purple; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface puberulous. Lower glume apex acute. Upper glume lanceolate; 3.5-4.5 mm long; 1.1-1.2 length of adjacent fertile lemma; membranous; light green, or purple; 1-keeled. Upper glume surface puberulous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 3-3.7 mm long; membranous; without keel. Lemma surface scabrous; glabrous, or puberulous. Lemma apex dentate; 3-4 -fid; awned; 5 -awned. Principal lemma awn dorsal; arising 0.4-0.5 way up back of lemma; geniculate; 4.3-5.8 mm long overall; with twisted column. Lateral lemma awns arising on apex of lobes; 0.5 mm long. Rhachilla extension 0.6-1 mm long; pubescent; with 0.5-1 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    South America: northern South America, western South America, and southern South America.
    Reference
    Aveneae. Tovar 1995.
    [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
    Colombia
    [GB]
    Habit
    Perennial; caespitose. Culms erect; 20-30 cm long. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 5-6 mm long; acute. Leaf-blades 3-8 cm long; 3-4 mm wide. Leaf-blade surface scaberulous. Leaf-blade margins ciliate.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; lanceolate; 3-8 cm long; 1-1.5 cm wide. Primary panicle branches ascending. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.1 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.1 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 4.5 mm long; 1.1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 4 mm long; 1.1 length of adjacent fertile lemma; membranous; purple; 1-keeled; 1-3 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent, or obscure. Upper glume apex acute.
    Florets
    Fertile lemma oblong; 3.5-3.7 mm long; membranous; without keel; 5 -veined. Lemma lateral veins obscure. Lemma apex dentate; 4 -fid; with lobes 0.5 mm long; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; geniculate; 4-5 mm long overall; with twisted column. Rhachilla extension 0.2-0.25 length of fertile floret; pilose.
    Flowers
    Lodicules 2. Anthers 3. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    South America: northern South America.
    Reference
    Aveneae. Luces 1996.
    [GB]
    Habit
    Perennial; caespitose. Culms erect; 35-50 cm long. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane; 0.8-1.5 mm long; pubescent on abaxial surface. Leaf-blades 4-7 cm long; 1.5-3 mm wide. Leaf-blade surface pubescent; densely hairy; hairy abaxially.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 6-9 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-5.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.5-0.6 mm long.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-5.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.5-0.6 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 5-5.5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 5-5.5 mm long; membranous; 1-keeled; 3 -veined. Upper glume primary vein scaberulous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 3.5-4 mm long; cartilaginous; without keel; 5 -veined. Lemma apex erose; awned; 1 -awned. Principal lemma awn dorsal; geniculate; 5.5-6 mm long overall; with twisted column. Rhachilla extension 0.8 mm long; pubescent; with 0.5-1 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    South America: western South America.
    Reference
    Aveneae. Gr Peru 1997.

    Images

    Distribution

    Native to:

    Argentina Northwest, Bolivia, Chile North, Colombia, Ecuador, Peru, Venezuela

    Synonyms

    Other Data

    Calamagrostis heterophylla (Wedd.) Pilg. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Ball, J. [s.n.], Peru K000308442
    Ball, J. [s.n.], Peru K000308443 Unknown type material
    Ball, J. [s.n.], Peru K000308444
    Lechler, W. [1809], Peru K000308445
    Lechler, W. [1809], Peru K000362584
    Tovar, O. [1168], Peru K000308446 Unknown type material

    Bibliography

    First published in Bot. Jahrb. Syst. 42: 64 (1908)

    Accepted by

    • (2019). https://doi.org/10.3897/phytokeys.122.33032 epublication.
    • Montesinos Tubée, D.B. (2012). Lista anotada de nuevas adiciones para la flora andina de Moquegua, Perú Revista Peruana de Biología 19: 307-316.
    • 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.
    • 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.
    • 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.

    Literature

    Kew Backbone Distributions

    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • 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.
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • 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.
    • 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

    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 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