1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus articularis (Trin.) M.W.Tornab. & W.L.Wagner

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

    [GB]
    Habit
    Perennial; caespitose. Culms erect, or geniculately ascending, or decumbent; 15-60 cm long; wiry. Culm-nodes glabrous. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades flat, or convolute; 15-50 cm long; 1-5 mm wide. Leaf-blade surface scaberulous; rough adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear, or oblong; 4-10 cm long. Primary panicle branches accrescent to a central axis; with sessile scars on axis. Panicle axis angular; with scattered hairs to pubescent; bearing deciduous spikelet clusters. Spikelets subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Involucre composed of bristles; oblong; 8-20 mm long; base obconical; base 0.5 mm long; base pubescent. Involucral bristles deciduous with the fertile spikelets; numerous; with an outer whorl of thinner bristles; inner bristles longer than outer; with longest bristle scarcely emergent; 8-20 mm long; terete; flexible; antrorsely scaberulous; glabrous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 5-6 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 5-6 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes one the lower absent or obscure, or two; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 0-3 mm long; 0-0.5 length of spikelet; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 0.5-0.75 length of spikelet; membranous; without keels; 1-3 -veined. Upper glume lateral veins absent, or obscure. Upper glume apex acuminate.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; 1 length of spikelet; membranous; 3-5 -veined; acuminate. Fertile lemma lanceolate; 4.5-5.5 mm long; chartaceous; without keel; 5 -veined. Lemma margins flat. Lemma apex acuminate. Palea 1 length of lemma; chartaceous.
    Flowers
    Lodicules absent. Anthers 3; 2 mm long; anther tip apiculate. Stigmas pubescent. Styles connate below.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Pacific: south-central.
    Reference
    Paniceae. Brown 1993.

    Images

    Distribution

    Native to:

    Marquesas

    Cenchrus articularis (Trin.) M.W.Tornab. & W.L.Wagner appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Mathews, A. [32], Marquesas Pennisetum articulare K001056192
    Barclay, G.W. [s.n.] Pennisetum articulare K001056191
    Barclay, G.W. [s.n.], Marquesas Pennisetum articulare K001056193
    Delmas, S. [12], Marquesas Pennisetum articulare K001056142 isotype

    First published in PhytoKeys 28: 2 (2013)

    Literature

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