1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne nipponensis Ohwi

        This species is accepted, and its native range is S. China to Temp. E. Asia.

    [GB]
    Habit
    Perennial; mat forming. Culms prostrate; 20-50 cm long; 0.3-0.8 mm diam.; rooting from lower nodes. Culm-internodes 1-6 cm long. Leaves cauline. Leaf-sheaths pubescent; outer margin hairy. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs; 1 mm long. Leaf-blade base cuneate, or broadly rounded. Leaf-blades elliptic, or ovate; 2-4.5 cm long; 7-15 mm wide. Leaf-blade surface puberulous; sparsely hairy; hairy abaxially, or on both sides. Leaf-blade margins cartilaginous; entire, or undulate. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle; exserted, or embraced at base by subtending leaf. Panicle open; ovate; 3-6 cm long; 1.5-4 cm wide. Primary panicle branches 1-3 -nate; 1-4 cm long; bearing 1-5 fertile spikelets on each lower branch. Panicle branches capillary. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular, or obovate; dorsally compressed; 1.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular, or obovate; dorsally compressed; 1.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; similar; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate, or ovate; 1.3-1.5 mm long; 0.9-1 length of spikelet; membranous; much thinner on margins; without keels; 5 -veined. Lower glume surface pubescent; hairy above. Lower glume apex obtuse. Upper glume lanceolate, or ovate; 1.3-1.5 mm long; 0.9-1 length of spikelet; membranous; with hyaline margins; without keels; 5 -veined. Upper glume surface pubescent; hairy above. Upper glume apex obtuse.
    Florets
    Fertile lemma elliptic; 1.3 mm long; indurate; without keel. Lemma surface pubescent. Lemma margins involute. Lemma apex obtuse. Palea indurate; 2 -veined. Palea surface pubescent.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: China and eastern Asia.
    Reference
    Isachneae. Koyama 1994.

    Images

    Distribution

    Native to:

    China South-Central, China Southeast, Japan, Korea, Nansei-shoto, Taiwan

    Introduced into:

    Nicobar Is.

    Isachne nipponensis Ohwi appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Ohwi, J. [91], Japan K001056226 Unknown type material
    Ohwi, J. [91], Japan K001056227 Unknown type material

    First published in Acta Phytotax. Geobot. 4: 30 (1935)

    Accepted by

    • Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST.
    • Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India Journal of Economic and Taxonomic Botany 32: 403-500.
    • 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.
    • Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
    • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.

    Literature

    Kew Backbone Distributions
    • Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India Journal of Economic and Taxonomic Botany 32: 403-500.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
    • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.
    • Walker, E.H. (1976). Flora of Okinawa and the southern Ryukyu islands: 1-1159. Smithsonian Institution Press, Washington D.C., U.S.A.

    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