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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis × filipes (Keng) P.C.Kuo & S.L.Lu ex J.L.Yang

        This species is accepted, and its native range is S. Central China.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 30-60 cm long; 1-1.2 mm diam. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 2-3 mm long. Leaf-blades erect; flat, or involute; 6-18 cm long; 2-7 mm wide. Leaf-blade surface smooth, or scaberulous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Peduncle smooth. Panicle open; lanceolate, or pyramidal; 8-15 cm long; 3-5 cm wide. Panicle branches smooth, or scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; flexuous; smooth, or scaberulous.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.25-0.33 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.25-0.33 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 5-6 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein smooth, or scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 5-6 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; (1-)3 -veined. Upper glume primary vein smooth, or scaberulous. Upper glume lateral veins absent, or obscure. Upper glume apex acuminate.
    Florets
    Fertile lemma oblong; 4-5 mm long; membranous; without keel; 5 -veined. Lemma lateral veins excurrent, or extending close to apex. Lemma apex erose; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1 way up back of lemma; geniculate; 6-9 mm long overall; with twisted column. Palea 3-5 mm long; 0.75-1 length of lemma; 2 -veined. Rhachilla extension 1-1.5 mm long; pilose; with 1.5-2 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3; 2.5-3 mm long; purple. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; fusiform; 2 mm long. Hilum punctiform.
    Distribution
    Asia-temperate: China.
    Reference
    Aveneae. Keng 1996.

    Distribution

    Native to:

    China South-Central

    Synonyms

    Other Data

    Calamagrostis × filipes (Keng) P.C.Kuo & S.L.Lu ex J.L.Yang appears in other Kew resources:

    Bibliography

    First published in Fl. Sichuanica 5(2): 92 (1988)

    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