1. Family: Poaceae Barnhart
    1. Genus: Pentameris P.Beauv.
      1. Pentameris humbertii (A.Camus) Galley & H.P.Linder

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

    [GB]
    Habit
    Perennial; mat forming. Glands absent. Culms 40-50 cm long; 8-10 -noded. Leaves cauline. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades 10-15 cm long; 1-3 mm wide. Leaf-blade surface glabrous. Leaf-blade margins smooth. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 12 cm long; 8 cm wide. Panicle branches bearded in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent.
    Glume
    Glumes persistent; similar; exceeding apex of florets; shiny; gaping. Lower glume elliptic; 8 mm long; 1 length of upper glume; membranous; yellow; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 8 mm long; 1.6 length of adjacent fertile lemma; membranous; yellow; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma oblong; 5 mm long; membranous; without keel; 5-9 -veined. Lemma surface pilose; hairy below. Lemma apex lobed; 2 -fid; incised 0.25-0.33 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; straight; 6 mm long overall. Palea 1 length of lemma. Rhachilla extension 0-0.05 length of fertile floret.
    Flowers
    Lodicules 2; cuneate; fleshy; glabrous. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Africa: western Indian ocean.
    Reference
    Arundineae. Linder.

    Images

    Distribution

    Native to:

    Madagascar

    Pentameris humbertii (A.Camus) Galley & H.P.Linder appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Humbert, H. [3310], South Africa Pentaschistis humbertii K000367204 Unknown type material
    Humbert, H. [3310], South Africa Pentaschistis humbertii K000367205 Unknown type material
    Humbert, H. [3310], South Africa Pentaschistis humbertii K000367206 Unknown type material

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

    Literature

    Kew Backbone Distributions
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    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