1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida aequiglumis Hack.

        This species is accepted, and its native range is Zambia to Northern Prov.

    [FZ]

    Gramineae, E. Launert. Flora Zambesiaca 10:1. 1971

    Habit
    Perennial, usually c. 40 cm. high, densely caespitose.
    Culms
    Culms erect, slender, usually simple, rarely branched from the upper nodes, terete, glabrous, smooth or minutely scaberulous below the nodes, c. 3-4-noded; nodes glabrous, smooth.
    Leaf sheaths
    Leaf-sheaths usually tight, glabrous, smooth, persistent.
    Ligules
    Ligule a short-ciliolate rim; auricles minutely pubescent, sometimes with long hairs; collar minutely pubescent.
    Leaf lamina
    Leaf-laminae up to 15 x 0·1-0·15 cm. (when expanded), erect or slightly curved, usually setaceously convolute, rather firm, minutely puberulous above, glabrous, smooth beneath.
    Inflorescences
    Panicle 6-15 cm. long, linear-oblong, usually lax and open, sometimes contracted; axis terete in the lower part, more or less angular upwards, slightly scaberulous; branches up to 4 cm. long, solitary or 2-nate, suberect, filiform, minutely scaberulous, with 1-3 spikelets.
    Glume
    Glumes subequal, linear-lanceolate, 1-nerved, with a prominent glabrous or scabrid keel, scabrid or shortly hirtellous on the back, often with somewhat recurved apices; the inferior 5-9 mm. long, with a short awn up to 1·5 mm. long, the superior 5·5-9·5 mm. long, usually 2-fid, with a mucro from the sinus.
    Lemma
    Lemma 6-7 mm. long, minutely scaberulous towards the apex; callus c. 0.5 mm. long, subobtuse or obtuse, shortly barbate; column 2-8 mm. long, twisted, scabrid; awns somewhat unequal, filiform, suberect or slightly spreading, scaberulous, the central 15-25 mm. long, the lateral ones 13-20 mm. long; articulation absent.
    Cytology
    2n = 22.
    [GB]
    Habit
    Perennial. Culms 30-40 cm long; 3-4 -noded. Culm-internodes distally glabrous. Ligule a fringe of hairs. Leaf-blades filiform; convolute; 5-15 cm long; 1-1.5 mm wide. Leaf-blade surface pubescent; hairy adaxially.
    Inflorescences
    Inflorescence a panicle. Panicle open, or contracted; lanceolate, or oblong; 6-15 cm long. Primary panicle branches 1-2 -nate; 2-4 cm long; bearing 1-3 fertile spikelets on each lower branch. Panicle branches scaberulous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 5.5-9.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 5.5-9.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pilose; obtuse.
    Glume
    Glumes persistent; similar; exceeding apex of florets, or reaching apex of florets; thinner than fertile lemma; parallel to lemmas, or recurved at apex. Lower glume lanceolate; 5-9 mm long; 0.9-1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 0.5-1.5 mm long. Upper glume lanceolate; 5.5-9.5 mm long; 1-1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface scabrous. Upper glume apex dentate; 2 -fid; mucronate.
    Florets
    Fertile lemma elliptic; subterete; 6-7 mm long; coriaceous; without keel; 3 -veined. Lemma surface scaberulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 15-25 mm long limb; with twisted column; persistent. Column of lemma awn 2-8 mm long. Lateral lemma awns 13-20 mm long; shorter than principal. Palea 0.2 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: southern tropical and south.
    Reference
    Aristideae. FZ.

    Images

    Distribution

    Native to:

    Northern Provinces, Zambia, Zimbabwe

    Aristida aequiglumis Hack. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Welwitsch [2691], Angola K000366810
    Schlechter, F.R.R. [4129], South Africa K000366724
    Schlechter, F.R.R. [4129], South Africa K000366723
    Rehmann [4696], South Africa K000366722

    First published in Bull. Herb. Boissier 3: 381 (1895)

    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.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Launert, E. (1971). Flora Zambesiaca 10(1): 1-152. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Launert, E. (1971). Flora Zambesiaca 10(1): 1-152. 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 2020. 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 2020. 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