1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum niihauense H.St.John

        This species is accepted, and its native range is Hawaiian Islands.

    [GB]
    Habit
    Perennial; caespitose. Culms 50-125 cm long. Culm-internodes distally pubescent. Culm-nodes pubescent. Lateral branches lacking. Leaves cauline. Leaf-sheaths puberulous and hispid. Ligule a ciliate membrane; 1.4-3.2 mm long. Leaf-blades 15-35 cm long; 7-19 mm wide. Leaf-blade surface pubescent; densely hairy.
    Inflorescences
    Inflorescence a panicle. Panicle open; lanceolate; 13-35 cm long; contracted about primary branches. Primary panicle branches appressed. Panicle axis puberulous. Panicle branches scaberulous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 2.6-3.2 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 2.6-3.2 mm long; falling entire.
    Glume
    Glumes reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 0.9-1 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acuminate. Upper glume lanceolate; 1 length of spikelet; membranous; without keels; 5-7 -veined. Upper glume apex acuminate.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 7-9 -veined; acute. Palea of lower sterile floret 0.2-0.25 length of lemma. Fertile lemma elliptic; dorsally compressed; 1.2-1.5 mm long; indurate; shiny; without keel. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
    Flowers
    Anthers 3; 0.9-1.2 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Pacific: north-central.
    Reference
    Paniceae. Wagner 1993.

    Distribution

    Panicum niihauense H.St.John appears in other Kew resources:

    First published in Occas. Pap. Bernice Pauahi Bishop Mus. 9(14): 5 (1931)

    Accepted by

    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • 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.

    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.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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