Hakonechloa macra (Munro) Honda

This species is accepted, and its native range is Japan.

[GB]
Morphology General Habit
Perennial. Rhizomes elongated; scaly. Stolons present. Culms erect; 40-70 cm long; 1-1.5 mm diam.; 6-8 -noded. Leaves cauline. Leaf-sheath oral hairs pubescent. Ligule a ciliolate membrane. Leaf-blades lanceolate; 8-25 cm long; 4-12 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; comprising 15-20 fertile spikelets. Panicle open; ovate; 6-12 cm long; 5-7 cm wide; bearing few spikelets. Primary panicle branches 2 -nate. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; glabrous, or ciliate; hairy above and below (base & tip).
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 10-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.3-0.4 mm long. Floret callus elongated; 1.5-2 mm long; pilose.
Fertile
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 10-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.3-0.4 mm long. Floret callus elongated; 1.5-2 mm long; pilose.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3-4 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1-3 -veined. Lower glume apex acuminate. Upper glume lanceolate; 3.8-5 mm long; 0.7 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 6-7 mm long; membranous; keeled; 3 -veined. Lemma margins ciliate; hairy below. Lemma apex acute; awned; 1 -awned. Principal lemma awn 3-4.5 mm long overall. Palea oblong; 0.8 length of lemma; 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 2-3 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with free soft pericarp; oblong; 2 mm long.
Distribution
Asia-temperate: eastern Asia.
Reference
Arundineae. Koyama.

Native to:

Japan

Introduced into:

Brazil Southeast, Utah

Hakonechloa macra (Munro) Honda appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Bisset, J. [805], Japan K000859986

First published in J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 3: 113 (1930)

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.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.

Literature

Kew Backbone Distributions

  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
  • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.

  • GrassBase - The Online World Grass Flora

    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    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 2022. 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 2022. 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

  • Kew Science Photographs

    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/