1. Family: Poaceae Barnhart
    1. Genus: Pogonarthria Stapf
      1. Pogonarthria refracta Launert

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

    [FZ]

    Gramineae, T. Cope. Flora Zambesiaca 10:2. 1999

    Habit
    Caespitose annual; culms up to 35 cm tall, erect or geniculately ascending, branched from the lower nodes; leaf laminas (1.5)3–15(20) cm × 1.5–2.5 mm, flat or somewhat involute, tapering to a fine point.
    Inflorescences
    Inflorescence 4–12 cm long (or more); racemes 0.8–1.5 cm long, spreading or more often ± reclined.
    Spikelets
    Spikelets 4–6 mm long, 3–5-flowered, narrowly elliptic; rhachilla internodes thickened, shortly clavate (except the uppermost), stiffly pilose towards the apex, rarely glabrous; glumes ovate-lanceolate or triangular-lanceolate, the inferior 1.5–1.7 mm long, the superior 2.1–2.4 mm long; lemmas c. 2.8 mm long, ovate-lanceolate to ovate-triangular, acute.
    [GB]
    Habit
    Perennial; caespitose. Culms geniculately ascending; 15-45 cm long; 3-5 -noded. Culm-internodes distally pilose. Leaf-sheaths glabrous on surface, or pilose. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades flat, or involute; (1.5-)3-15(-20) cm long; 1.5-2.5 mm wide. Leaf-blade surface pilose; hairy on both sides. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence composed of racemes; bearing juvenile spikelets at emergence. Racemes numerous; borne along a central axis; deflexed, or spreading; unilateral; 0.8-1.5 cm long. Central inflorescence axis 4-15 cm long. Rhachis deciduous from axis; angular; scabrous on margins. Spikelet packing broadside to rhachis; crowded. Spikelets ascending; solitary. Fertile spikelets pedicelled. Pedicels cuneate; 0.8-2 mm long; scaberulous.
    Spikelets
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 4-6 mm long; breaking up at maturity; disarticulating between fertile florets but the lowest falling with glumes attached. Rhachilla internodes elongated below proximal fertile floret; clavate; 0.8 mm long; pubescent; hairy at tip.
    Fertile
    Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 4-6 mm long; breaking up at maturity; disarticulating between fertile florets but the lowest falling with glumes attached. Rhachilla internodes elongated below proximal fertile floret; clavate; 0.8 mm long; pubescent; hairy at tip.
    Glume
    Glumes deciduous with pedicel attached (to rhachis); similar; shorter than spikelet. Lower glume lanceolate; 1.5-1.7 mm long; 1-1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.4-1.6 mm long; 0.6 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile florets decreasing in size upwards. Fertile lemma ovate; 2.5-3 mm long; membranous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma margins ciliolate; hairy above. Lemma apex acuminate. Palea elliptic; 0.9 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; fleshy. Anthers 3; 0.6 mm long.
    Fruits
    Caryopsis with adherent pericarp; lanceolate; isodiametric; trigonous; 1.6 mm long.
    Distribution
    Africa: southern tropical.
    Reference
    Eragrostideae. WDC.

    Images

    Distribution

    Pogonarthria refracta Launert appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Mitchell, B. L. [13/09], Zambia K000365369 Unknown type material

    First published in Senckenberg. Biol. 47: 304 (1966)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Cope, T. (1999). Flora Zambesiaca 10(2): 1-261. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Cope, T. (1999). Flora Zambesiaca 10(2): 1-261. Royal Botanic Gardens, Kew.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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