Skip to main content
  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis altaica Tzvelev

        This species is accepted, and its native range is E. Kazakhstan to NW. China.

    [GB]
    Habit
    Perennial; caespitose; clumped loosely. Culms slender; 40-65 cm long; 2-3 -noded. Culm-internodes smooth. Lateral branches lacking. Ligule an eciliate membrane; 1.5-4 mm long; pubescent on abaxial surface. Leaf-blades 2-4 mm wide; mid-green. Leaf-blade surface scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 5-7 cm long; 0.7-1.4 cm wide. Primary panicle branches 0.5-2 cm long. Panicle branches scabrous. 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 bearded. Floret callus hairs 0.5 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 bearded. Floret callus hairs 0.5 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 0.9 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acuminate. Upper glume lanceolate; 4-5 mm long; membranous; purple; 1-keeled; 3 -veined. Upper glume surface asperulous. Upper glume apex acuminate.
    Florets
    Fertile lemma lanceolate; 3-4 mm long; membranous; without keel; 5 -veined. Lemma surface scaberulous. Lemma apex dentate; 2 -fid, or 4 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1 way up back of lemma; geniculate; 3.5-5.5 mm long overall; with twisted column. Palea 1 length of lemma. Rhachilla extension 0.8-1.3 mm long; pilose.
    Flowers
    Lodicules 2. Anthers 3; 1.8-2.5 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    Asia-temperate: Soviet Middle Asia and China.
    Reference
    Aveneae. Pl Cent Asia 1996.

    Distribution

    Native to:

    Kazakhstan, Xinjiang

    Other Data

    Calamagrostis altaica Tzvelev appears in other Kew resources:

    Bibliography

    First published in Trudy Bot. Inst. Akad. Nauk S.S.S.R., Rast. Tsentral. Azii 4: 82 (1968)

    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

    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