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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis macilenta (Griseb.) Litv.

        This species is accepted, and its native range is Siberia to Mongolia.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes elongated. Culms 15-40 cm long. Lateral branches lacking. Ligule an eciliate membrane; 0.5-5 mm long. Leaf-blades involute; 1-3 mm wide. Leaf-blade surface scabrous.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear, or oblong; continuous, or interrupted; 3-7 cm long; 0.5-1.5 cm wide. 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 0.33-0.5 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 0.33-0.5 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 1.3 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma lanceolate; 3-4 mm long; membranous; without keel; 5 -veined. Lemma apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.25 way up back of lemma; geniculate; 4 mm long overall; with twisted column. Rhachilla extension 1.5-2 mm long; pilose; with 2-3 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    Asia-temperate: Siberia, China, and Mongolia.
    Reference
    Aveneae. Fl USSR 1995.

    Distribution

    Native to:

    Altay, Buryatiya, Chita, Irkutsk, Krasnoyarsk, Mongolia, Tuva, Xinjiang

    Synonyms

    Other Data

    Calamagrostis macilenta (Griseb.) Litv. appears in other Kew resources:

    Bibliography

    First published in Bot. Mater. Gerb. Glavn. Bot. Sada R.S.F.S.R. 2: 119 (1921)

    Accepted by

    • Grubov, V.I. (2008). Key to the vascular plants of Mongolia (with an atlas) 2: 1-503. Academy of Sciences, Mongolian People's Republic, Ulaan Bator.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.

    Literature

    Kew Backbone Distributions

    • Grubov, V.I. (2008). Key to the vascular plants of Mongolia (with an atlas) 2: 1-503. Academy of Sciences, Mongolian People's Republic, Ulaan Bator.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.

    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