1. Family: Poaceae Barnhart
    1. Genus: Pseudostachyum Munro
      1. Pseudostachyum polymorphum Munro

        This species is accepted, and its native range is E. Himalaya to China (Yunnan, Guangdong, Guangxi).

    [GB]
    Habit
    Perennial; culms solitary. Rhizomes elongated; pachymorph. Culms erect, or leaning; 1500-2000 cm long; 30-35 mm diam.; woody. Culm-internodes terete; thin-walled; 20-23 cm long; dark green, or glaucous. Lateral branches dendroid. Culm-sheaths pubescent; with appressed hairs; with dark brown hairs; truncate at apex; auriculate; ciliate on shoulders. Culm-sheath ligule dentate. Culm-sheath blade triangular; as wide as sheath at base; acuminate. Leaf-sheaths puberulous. Ligule an eciliate membrane. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.7-1.3 cm long. Leaf-blades lanceolate, or oblong; 10-20 cm long; 25-60 mm wide. Leaf-blade venation with 14-22 secondary veins; with distinct cross veins. Leaf-blade surface smooth. Leaf-blade apex attenuate.
    Inflorescences
    Synflorescence bractiferous; paniculate; lax; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1-3 basal sterile florets; 1 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1-3 basal sterile florets; 1 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes one the lower absent or obscure; persistent; shorter than spikelet. Upper glume ovate; chartaceous; without keels; 7 -veined. Upper glume apex acute; mucronate.
    Florets
    Fertile lemma ovate; 5 mm long; chartaceous; without keel. Lemma margins ciliate. Lemma apex acute. Palea tightly convolute around flower; chartaceous. Palea keels ciliate.
    Flowers
    Lodicules 3, or several (3-5); ciliate. Anthers 6; anther tip apiculate. Stigmas 2; pubescent. Ovary with a steeple-like appendage; glabrous.
    Fruits
    Caryopsis with free brittle pericarp; orbicular.
    Distribution
    Asia-temperate: China. Asia-tropical: India and Indo-China.
    Reference
    Bambuseae. Gamble 1996.

    Images

    Distribution

    Native to:

    Assam, Bangladesh, China South-Central, China Southeast, East Himalaya, Myanmar, Thailand, Vietnam

    Pseudostachyum polymorphum Munro appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1868 Hooker, J.D. [s.n.], Sikkim K000246163 syntype
    Jan 1, 1868 Hooker, J.D. [s.n.], Sikkim K000246165 syntype
    Jan 1, 1868 Hooker, J.D. [s.n.], Sikkim K000246166 syntype
    Jan 1, 1868 Griffith, W. [6735], India K000246164 syntype
    Griffith, W. [s.n.], West Bengal K000794865 syntype
    Griffith, W. [s.n.], West Bengal K000794866 syntype
    Griffith, W. [s.n.], India K000794867 syntype

    First published in Trans. Linn. Soc. London 26: 142 (1868)

    Accepted by

    • Teerawatananon, A. & al. (2014). Studies in the recent new genus record Pseudostachyum (Poaceae: Bambusoideae) from Thailand Nordic Journal of Botany 32: 51-54.
    • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar Contributions from the United States National Herbarium 45: 1-590.
    • Noltie, H.J. (2000). Flora of Bhutan 3(2): 457-883. Royal Botanic Gardens, Edinburgh.

    Literature

    Kew Backbone Distributions
    • Teerawatananon, A. & al. (2014). Studies in the recent new genus record Pseudostachyum (Poaceae: Bambusoideae) from Thailand Nordic Journal of Botany 32: 51-54.
    • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
    • 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.
    • 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

    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