1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis tripilifera Hook.f.

        This species is accepted, and its native range is Central & E. Himalaya to Central China.

    [GB]
    Habit
    Perennial. Culms erect, or geniculately ascending; 30-40 cm long; 2 mm diam.; 2 -noded. Culm-internodes elliptical in section. Lateral branches lacking. Leaf-sheaths loose; glabrous on surface. Ligule an eciliate membrane; 4-6 mm long; truncate, or obtuse. Leaf-blades 4-12 cm long; 2-5 mm wide. Leaf-blade surface scaberulous.
    Inflorescences
    Inflorescence a panicle; embraced at base by subtending leaf. Panicle open; ovate; 12 cm long. Primary panicle branches ascending. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5.5-7 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; 5.5-7 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; 5.5-7 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 5.5-7 mm long; 1.2-1.6 length of adjacent fertile lemma; membranous; 1-keeled; (1-)3 -veined. Upper glume primary vein 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 apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.1 way up back of lemma; geniculate; 6-7 mm long overall; with twisted column. Palea 2 -veined. Rhachilla extension 1 mm long; pilose; with 2 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3; 1 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    Asia-temperate: China.
    Reference
    Aveneae. Keng 1996.

    Distribution

    Native to:

    China North-Central, China South-Central, East Himalaya, Nepal, Qinghai, Tibet, Vietnam

    Calamagrostis tripilifera Hook.f. appears in other Kew resources:

    First published in Fl. Brit. India 7: 262 (1896)

    Accepted by

    • Paszko, B. (2012). Taxonomic revision of Calamagrostis filiformis, C. tripilifera and their allies (Poaceae: Agrostidinae) Polish Botanical Journal 57: 335-346.

    Not 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. [Cited as Agrostis tripilifera (Hook.f.) Forsan, 2000.]

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • H?, P.-H. (2000). Câyc? Vi?tnam. An Illustrated flora of Vietnam, ed. 2, 3: 1-1020. Pham-hoang Ho, Montréal.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.

    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