1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne myosotis Nees

        This species is accepted, and its native range is Nansei-shoto to SE. China, Indo-China to N. Australia.

    [GB]
    Habit
    Annual; mat forming, or caespitose. Culms prostrate; 2-6 cm long. Lateral branches ample. Leaf-sheaths pilose; with simple hairs, or tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs; 1 mm long. Leaf-blades lanceolate, or ovate; 5-15 cm long; 2-4 mm wide. Leaf-blade surface pubescent, or pilose; densely hairy; with tubercle-based hairs.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; elliptic; 7-16 cm long; bearing few spikelets. Panicle branches smooth. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1-1.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1-1.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1-1.5 mm long; 1 length of upper glume; 1 length of spikelet; membranous; without keels. Lower glume surface glabrous, or hispidulous. Lower glume apex obtuse. Upper glume ovate; 1-1.5 mm long; 1 length of adjacent fertile lemma; membranous; without keels. Upper glume surface glabrous, or hispidulous. Upper glume apex obtuse.
    Florets
    Fertile lemma elliptic, or orbicular; 1-1.3 mm long; coriaceous; without keel. Lemma surface puberulous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 3.
    Distribution
    Asia-temperate: China and eastern Asia. Asia-tropical: Indo-China, Malesia, and Papuasia.
    Reference
    Isachneae. Reeder 1993.
    [GB]
    Habit
    Annual. Culms prostrate; weak; 10-15 cm long; rooting from lower nodes. Culm-internodes distally glabrous. Leaf-sheaths loose; hirsute; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs; 1 mm long. Leaf-blades lanceolate, or ovate; 1-1.5 cm long; 4 mm wide. Leaf-blade surface glabrous, or pilose; with tubercle-based hairs. Leaf-blade margins scabrous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 1.5 cm long; bearing few spikelets. Panicle axis glabrous. Panicle branches stiff; glabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1.8-2 mm long; 1 length of upper glume; 1 length of spikelet; membranous; without keels. Lower glume surface hispidulous. Lower glume apex obtuse. Upper glume ovate; 1.8-2 mm long; 1 length of adjacent fertile lemma; membranous; without keels. Upper glume surface hispidulous. Upper glume apex obtuse.
    Florets
    Fertile lemma elliptic; 1.5-1.8 mm long; coriaceous; without keel. Lemma surface puberulous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Distribution
    Asia-temperate: eastern Asia. Asia-tropical: Malesia and Papuasia.
    Reference
    Isachneae. Reeder 1997.

    Images

    Distribution

    Native to:

    Borneo, Cambodia, China Southeast, Jawa, Lesser Sunda Is., Maluku, Myanmar, Nansei-shoto, New Guinea, Northern Territory, Philippines, Queensland, Sulawesi, Taiwan, Thailand, Vietnam

    Isachne myosotis Nees appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Aug 1, 1982 Loher, A. [1683], Philippines K000290359
    Aug 1, 1982 Cuming, H. [946], Philippines K000290356 isosyntype
    Aug 1, 1982 Cuming, H. [947], Philippines K000290358 isosyntype
    Aug 1, 1982 s.coll. [1970], Philippines K000290357
    Jan 1, 1950 Curran, H.M. [16841], Philippines K000290196 syntype
    Elmer, A.D.E. [6486], Philippines Isachne pauciflora K000290201 isotype
    Elmer, A.D.E. [6486], Philippines Isachne pauciflora K000290202 isotype
    Merrill, E.D. [4489], Philippines Isachne pauciflora K000290198 syntype
    Merrill, E.D. [4522], Philippines Isachne pauciflora K000290200
    Merrill, E.D. [4545], Philippines Isachne pauciflora K000290199 syntype
    Merrill, E.D. [4294], Philippines Isachne pauciflora K000290203
    Oldham, R. [605], Taiwan Isachne pauciflora K001056225 isotype

    First published in Hooker's J. Bot. Kew Gard. Misc. 2: 98 (1850)

    Accepted by

    • 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.
    • Walker, E.H. (1976). Flora of Okinawa and the southern Ryukyu islands: 1-1159. Smithsonian Institution Press, Washington D.C., U.S.A.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • 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.
    • Walker, E.H. (1976). Flora of Okinawa and the southern Ryukyu islands: 1-1159. Smithsonian Institution Press, Washington D.C., U.S.A.
    • Masamune, G. (1942). Enumeratio phanerogamarum Bornearum: 1-739. Taihoku, Formosa.
    • Camus, E.G. & Camus, A. in H. Lecomte (1922). Flore Générale de l'indo-Chine 1(3): 193-336.

    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