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

        This species is accepted, and its native range is S. Africa.

    [GB]
    Habit
    Perennial; caespitose. Stolons present. Butt sheaths glabrous; persistent and investing base of culm; with compacted dead sheaths. Glands absent. Culms 30-50 cm long; 3-5 -noded. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades filiform; convolute; 30 cm long; 0.5-2 mm wide; stiff; eglandular. Leaf-blade surface hirsute; hairy adaxially. Leaf-blade margins smooth. Leaf-blade apex obtuse.
    Inflorescences
    Inflorescence a panicle; comprising 50 fertile spikelets. Panicle open; ovate; 6-10 cm long; 6-9 cm wide. Panicle branches eglandular; glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 1.2 length of fertile spikelet; eglandular; smooth.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 6-10 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; 6-10 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; 6-10 mm long; 1 length of upper glume; membranous; mid-green; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 6-10 mm long; 1.7-2.8 length of adjacent fertile lemma; membranous; mid-green; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma oblong; 3.5 mm long; membranous; without keel; 5-9 -veined. Lemma surface villous. Lemma apex lobed; 2 -fid; with lobes 2 mm long; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; 3-11 mm long overall; with twisted column. Lateral lemma awns arising on inner edge of lobes; 1-5 mm long; equalling glumes, or enclosed by glumes; shorter than principal. Palea surface villous; hairy above.
    Flowers
    Lodicules 2; cuneate; fleshy; glabrous. Anthers 3; 3.2-4 mm long; brown.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Africa: south.
    Reference
    Arundineae. Linder 1992.

    Images

    Distribution

    Native to:

    Cape Provinces, Free State, KwaZulu-Natal

    Pentameris tysonii (Stapf) Galley & H.P.Linder appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Story, R. [3740], South Africa Pentaschistis tysonii K000719657
    Story, R. [4505], South Africa Pentaschistis tysonii K000719691
    Webster, M.M. [N424a], South Africa Pentaschistis tysonii K000719667
    Webster, M.M. [N424], South Africa Pentaschistis tysonii K000719668
    Webster, M.M. [N373], South Africa Pentaschistis tysonii K000719690
    Guillarmod, J. [156], South Africa Pentaschistis tysonii K000719666
    Linder, H.P. [4681], South Africa Pentaschistis tysonii K000719689
    Werdermann, E. [1135], South Africa Pentaschistis tysonii K000719656
    Tyson [1312], South Africa Pentaschistis tysonii K000367098
    Hilliard, O.M. [17801], South Africa Pentaschistis tysonii K000719658
    Hilliard, O.M. [17914], South Africa Pentaschistis tysonii K000719659
    Hilliard, O.M. [18591], South Africa Pentaschistis tysonii K000719660
    Hilliard, O.M. [16900], South Africa Pentaschistis tysonii K000719670
    Hilliard, O.M. [16939], South Africa Pentaschistis tysonii K000719671
    Hilliard, O.M. [13544], South Africa Pentaschistis tysonii K000719672
    Hilliard, O.M. [13627], South Africa Pentaschistis tysonii K000719673
    Hilliard, O.M. [14010], South Africa Pentaschistis tysonii K000719674
    Hilliard, O.M. [16983], South Africa Pentaschistis tysonii K000719675
    Hilliard, O.M. [17014], South Africa Pentaschistis tysonii K000719676
    Hilliard, O.M. [17182], South Africa Pentaschistis tysonii K000719677
    Hilliard, O.M. [17359], South Africa Pentaschistis tysonii K000719678
    Hilliard, O.M. [17913], South Africa Pentaschistis tysonii K000719679
    Hilliard, O.M. [13830], South Africa Pentaschistis tysonii K000719680
    Hilliard, O.M. [15995], South Africa Pentaschistis tysonii K000719681
    Hilliard, O.M. [16126], South Africa Pentaschistis tysonii K000719682
    Hilliard, O.M. [17183], South Africa Pentaschistis tysonii K000719683
    Hilliard, O.M. [17535], South Africa Pentaschistis tysonii K000719684
    MacOwan, P. [1299], South Africa Pentaschistis tysonii K000367096
    MacOwan, P. [1299], South Africa Pentaschistis tysonii K000367097
    Killick, D.J.B. [1792], South Africa Pentaschistis tysonii K000719652
    Killick, D.J.B. [1836], South Africa Pentaschistis tysonii K000719653
    Killick, D.J.B. [1589], South Africa Pentaschistis tysonii K000719655
    Killick, D.J.B. [1589], South Africa Pentaschistis tysonii K000719654
    Killick, D.J.B. [2280], South Africa Pentaschistis tysonii K000719669
    Devenish, N.J. [1081], South Africa Pentaschistis tysonii K000719650
    Smook, L. [1385], South Africa Pentaschistis tysonii K000719685
    Smook, L. [1386], South Africa Pentaschistis tysonii K000719686
    Smook, L. [1382], South Africa Pentaschistis tysonii K000719693
    Ellis, R.P. [3320], South Africa Pentaschistis tysonii K000719661
    Ellis, R.P. [3296], South Africa Pentaschistis tysonii K000719662
    Ellis, R.P. [3319], South Africa Pentaschistis tysonii K000719663
    Ellis, R.P. [3314], South Africa Pentaschistis tysonii K000719664
    Ellis, R.P. [03169 (01938)], South Africa Pentaschistis tysonii K000719694
    Ryves, T.B. [SSA03/102], South Africa Pentaschistis tysonii K000719688
    DuToit, P.C.V. [2643], South Africa Pentaschistis tysonii K000719647
    DuToit, P.C.V. [2654], South Africa Pentaschistis tysonii K000719692
    Hoener, F.K. [2009], South Africa Pentaschistis tysonii K000719695
    Acocks, J.P.H. [21054], South Africa Pentaschistis tysonii K000719665
    Acocks, J.P.H. [21890], South Africa Pentaschistis tysonii K000719687
    Furness, h.D. [97], South Africa Pentaschistis tysonii K000719648
    Furness, h.D. [213], South Africa Pentaschistis tysonii K000719649
    McClean, B. [149], South Africa Pentaschistis tysonii K000719651

    First published in Ann. Missouri Bot. Gard. 97: 329 (2010)

    Literature

    Kew Backbone Distributions
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.

    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