1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus flaccidus (Griseb.) Morrone

        This species is accepted, and its native range is Iran to Central Asia and China.

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short. Culms erect; 30-120 cm long. Lateral branches fastigiate. Leaf-sheaths without keel. Ligule a fringe of hairs. Leaf-blades flat; 5-40 cm long; 4-13 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 4-22 cm long. Primary panicle branches accrescent to a central axis; with sessile scars on axis. Panicle axis angular; scaberulous; glabrous; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2-3 in the cluster. Involucre composed of bristles; 12-22 mm long; base obtuse; base 0.3-0.7 mm long. Involucral bristles deciduous with the fertile spikelets; numerous; 12-22 mm long; terete; flexible; glabrous.
    Spikelets
    Companion sterile spikelets well-developed; male; lanceolate; 4.5-6.5 mm long; as long as fertile (and similar to it); deciduous with the fertile. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4.5-6.5 mm long; falling entire; deciduous with accessory branch structures.
    Sterile
    Companion sterile spikelets well-developed; male; lanceolate; 4.5-6.5 mm long; as long as fertile (and similar to it); deciduous with the fertile.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4.5-6.5 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes one the lower absent or obscure, or two; dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume oblong; 0-0.25 length of spikelet; hyaline; without keels. Lower glume apex emarginate, or obtuse, or acute. Upper glume oblong; 0.33-0.66 length of spikelet; membranous; without keels. Upper glume apex acute, or acuminate.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret elliptic; 1 length of spikelet; chartaceous; acuminate. Fertile lemma lanceolate; 4.5-6.5 mm long; chartaceous; without keel. Lemma margins flat. Lemma apex acuminate. Palea chartaceous.
    Flowers
    Anthers 3; anther tip smooth.
    Distribution
    Asia-temperate: Soviet Middle Asia, western Asia, China, and Mongolia. Asia-tropical: India.
    Reference
    Paniceae. Fl Pak 1993.

    Images

    Distribution

    Native to:

    Afghanistan, China North-Central, China South-Central, China Southeast, East Himalaya, Inner Mongolia, Iran, Kazakhstan, Manchuria, Mongolia, Nepal, Pakistan, Qinghai, Tadzhikistan, Tibet, West Himalaya, Xinjiang

    Introduced into:

    Italy, Poland

    Cenchrus flaccidus (Griseb.) Morrone appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Thomson, T. [s.n.], Tibet Pennisetum flaccidum K001056147
    Thomson, T. [s.n.], Tibet Pennisetum flaccidum K001056148
    Thomson, T. [s.n.], Tibet Pennisetum flaccidum K001056149
    s.coll. [2321], Tibet Pennisetum flaccidum K001056150
    s.coll. [2141], Tibet Pennisetum flaccidum K001056151

    First published in Ann. Bot. (Oxford) 106: 128 (2010)

    Accepted by

    • Engelmaier, P. & Wilhalm, T. (2018). Alien grasses (Poaceae) in the flora of the Eastern Alps Neilreichia 9: 177-245.

    Literature

    Kew Backbone Distributions
    • Engelmaier, P. & Wilhalm, T. (2018). Alien grasses (Poaceae) in the flora of the Eastern Alps Neilreichia 9: 177-245.
    • Kandwal, M.K. & Gupta, B.K. (2009). An update on grass flora of Uttarkhand Indian Journal of Forestry 32: 657-668.
    • 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.
    • Noltie, H.J. (2000). Flora of Bhutan 3(2): 457-883. Royal Botanic Gardens, Edinburgh.
    • Press, J.R. et al. (2000). Annotated Checklist of the Flowering Plants of Nepal: i-x, 1-430. Natural History Museum, London.
    • Bor, N.L. (1970). Flora Iranica 70: 1-573. Naturhistorisches Museums Wien.
    • Ovczinnikov, P.N. (ed.) (1957). Flora Tadzhikskoi SSR 1: 1-547. Izd-vo Akademii nauk SSSR, Moskva.
    • Pavlov, N.V. (ed.) (1956). Flora Kazakhstana 1: 1-354. Alma-Ata, Izd-vo Akademii nauk Kazakhskoi SSR.

    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 2019. 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 2019. 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