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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis atjehensis Ohwi

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

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 40-50 cm long. Ligule an eciliate membrane; 2-3 mm long. Leaf-blades involute; 10-15 cm long; 2.5-7 mm wide; stiff. Leaf-blade apex pungent.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; lanceolate; 10-15 cm long; 1.5-3 cm wide. Primary panicle branches 2-5 -nate. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.2-0.33 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.2-0.33 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 5-6 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 5-6 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 4-4.5 mm long; chartaceous; without keel; 5 -veined. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn from a sinus; straight; 0.5 mm long overall; not or scarcely exserted from spikelet. Palea keels smooth. Rhachilla extension 1 mm long; pilose.
    Flowers
    Lodicules 2. Anthers 3; 1-1.5 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    Asia-tropical: Malesia.
    Reference
    Aveneae. Ohwi 1994.

    Images

    Distribution

    Native to:

    Sumatera

    Synonyms

    Other Data

    Calamagrostis atjehensis Ohwi appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 1, 1993 Steenis, C.G.G.J.Van. [9583], Sumatera K000290487 isotype

    Bibliography

    First published in Bull. Tokyo Sci. Mus. 18: 13 (1947)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    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