1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida aemulans Melderis

        This species is accepted, and its native range is S. DR Congo to N. Zambia.

    [FZ]

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

    Habit
    Perennial, 40-70 cm. high, caespitose.
    Culms
    Culms erect, branched at the base, glabrous, smooth, 2-3-noded; nodes glabrous, smooth.
    Leaf sheaths
    Leaf-sheaths lax, somewhat keeled, glabrous, smooth.
    Ligules
    Ligule a densely short-ciliate rim; auricles barbate; collar glabrous or slightly pubescent.
    Leaf lamina
    Leaf-laminae of the lower leaves up to 40 x 0·2-0·25 cm., flat, spirally curled, when old densely nerved, with prominent, flattened, much-raised marginal nerves, scabrid on the nerves, usually with scattered long hairs above, glabrous and smooth beneath.
    Inflorescences
    Panicle 13-20 cm. long, long-exserted, contracted, more or less interrupted in the lower part, with a scabrid axis; branches usually single, angular, much-branched, appressed, scabrous, the lowermost 3-5 cm. long, naked at the base.
    Spikelets
    Spikelets purplish-green or brownish, with scaberulous pedicels.
    Glume
    Glumes very unequal, subobtuse or acute or slightly 2-fid, with a short mucro from the sinus; the inferior 3·5-4 mm. long, lanceolate, 1-3-nerved, scabrous on the keel, scabridulous on the back; the superior 6-7 mm. long, linear-lanceolate, scabrid on the keel towards the apex, glabrous or slightly scaberulous towards the apex.
    Lemma
    Lemma 3·5-4 mm. long, ±scaberulous towards the apex, glabrous and smooth at the base; callus 0·3-0·4 mm. long, obtuse, densely short-hairy; beak c. 0·5-1 mm. long, scaberulous; awns scabrous, slightly spreading; central awn 1·2-1·5 cm. long, the lateral ones 0·8-1 cm. long.
    [GB]
    Habit
    Perennial; caespitose. Culms erect; 40-70 cm long; 2-3 -noded. Culm-internodes distally glabrous. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades curled; 20-40 cm long; 2-2.5 mm wide. Leaf-blade surface scabrous; rough adaxially; pilose; sparsely hairy; hairy adaxially. Leaf-blade margins cartilaginous.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; lanceolate; interrupted; 13-20 cm long. Primary panicle branches 1 -nate; 3-5 cm long. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.3-0.4 mm long; pubescent; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.3-0.4 mm long; pubescent; obtuse.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 3.5-4 mm long; 0.6-0.8 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex emarginate, or obtuse, or acute; mucronate. Upper glume lanceolate; 6-7 mm long; 1.7-1.8 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume surface smooth, or asperulous; rough above. Upper glume apex emarginate, or obtuse, or acute; mucronate.
    Florets
    Fertile lemma elliptic; subterete; 3.5-4 mm long; coriaceous; keeled; 3 -veined. Lemma surface scaberulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex rostrate; with a short cylindrical neck; with this appendage 0.5-1 mm long; awned; 3 -awned. Principal lemma awn 3-branched; with 12-15 mm long limb; persistent. Lateral lemma awns 8-10 mm long; shorter than principal. Palea 0.1 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: west-central tropical and southern tropical.
    Reference
    Aristideae. FZ.

    Images

    Distribution

    Native to:

    Zambia, Zaïre

    Aristida aemulans Melderis appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Gathy, A. L. [1165], Congo, DRC K000366827

    First published in Bol. Soc. Brot., sér. 2, 44: 285 (1970)

    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.
    • 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