1. Family: Poaceae Barnhart
    1. Genus: Pentameris P.Beauv.
      1. Pentameris insularis (Hemsl.) Galley & H.P.Linder

        This species is accepted, and its native range is Amsterdam & St. Paul Islands.

    [GB]
    Habit
    Perennial; cushion forming. Stolons present. Butt sheaths pallid; glossy; glabrous; persistent and investing base of culm. Glands absent. Culms 35-45 cm long; 10 -noded. Lateral branches sparse. Leaves mostly basal. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking. Ligule a fringe of hairs. Leaf-blades 8 cm long; 4 mm wide; stiff; eglandular. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle; comprising 30-50 fertile spikelets. Panicle open; ovate; 3.5-7 cm long; 2-4 cm wide. Panicle branches eglandular; glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 0.8 length of fertile spikelet; eglandular; scaberulous.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 6.5-7.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 6.5-7.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent.
    Glume
    Glumes persistent; similar; exceeding apex of florets; gaping. Lower glume elliptic; 6.5-7.5 mm long; 1 length of upper glume; membranous; yellow; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume elliptic; 6.5-7.5 mm long; 2.6 length of adjacent fertile lemma; membranous; yellow; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acuminate.
    Florets
    Fertile lemma oblong; 2.5-2.8 mm long; membranous; without keel; 5-9 -veined. Lemma surface villous; hairy at base. Lemma apex lobed; 2 -fid; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; 7.5-12 mm long overall; with twisted column. Lateral lemma awns arising on inner edge of lobes; 2-2.5 mm long; enclosed by glumes; shorter than principal. Palea surface glabrous.
    Flowers
    Lodicules 2; cuneate; fleshy; glabrous. Anthers 3; 1.3 mm long; yellow.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Antarctic: Subantarctic islands.
    Reference
    Arundineae. Linder 1992.

    Images

    Distribution

    Native to:

    Amsterdam-St.Paul Is

    Pentameris insularis (Hemsl.) Galley & H.P.Linder appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    illegible [1], Antarctica Pentaschistis insularis K000719858
    MacGillivray, J. [686], Antarctica Pentaschistis insularis K000719856
    s.coll. [14], Antarctica Pentaschistis insularis K000719854
    s.coll. [s.n.], Antarctica Pentaschistis insularis K000719855
    Jalinek [s.n.], Antarctica Pentaschistis insularis K000719852
    Schimper, A.F.W. [s.n.], Antarctica Pentaschistis insularis K000719853
    Smith, A.J. [s.n.], Antarctica Pentaschistis insularis K000719857

    First published in Ann. Missouri Bot. Gard. 97: 333 (2010)

    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 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