1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis flaccida Keng f.

        This species is accepted, and its native range is China (Sichuan, Yunnan).

    [GB]
    Habit
    Perennial. Culms slender; 100 cm long; 1 mm diam.; 6 -noded; with 0.66 of their length below uppermost node. Culm-internodes smooth, or scaberulous. Lateral branches lacking. Leaf-sheaths 16 cm long; antrorsely scabrous. Ligule an eciliate membrane; 1-4 mm long; lacerate. Leaf-blades 5-17 cm long; 1-4 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 18 cm long; 14 cm wide. Primary panicle branches drooping; 2-5 -nate; 10 cm long. Panicle branches capillary; smooth. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 2-4 mm long; scabrous; tip widened.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 3 mm long; 0.75 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 3 mm long; 0.75 length of lemma.
    Glume
    Glumes persistent; similar; reaching apex of florets; firmer than fertile lemma. Lower glume lanceolate; 4 mm long; 1.1 length of upper glume; membranous; light green and purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 3.5 mm long; 1 length of adjacent fertile lemma; membranous; light green and purple; 1-keeled; 3 -veined. Upper glume primary vein smooth. Upper glume lateral veins obscure. Upper glume apex obtuse.
    Florets
    Fertile lemma oblong; 3.5 mm long; hyaline; without keel; 5 -veined. Lemma apex dentate; 2 -fid; obtuse; muticous. Palea 0.5 length of lemma; hyaline; 2 -veined. Rhachilla extension 0.8 mm long; villous; with 2.5 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3; 0.7 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; fusiform; 2 mm long; light brown. Hilum punctiform.
    Distribution
    Asia-temperate: China.
    Reference
    Aveneae. Keng 1996.

    Images

    Distribution

    Native to:

    China South-Central

    Calamagrostis flaccida Keng f. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Keng, Y.L. [3797], Sichuan K000794985 Unknown type material

    First published in Bull. Bot. Res., Harbin 4(3): 195 (1984)

    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.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    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