1. Family: Poaceae Barnhart
    1. Richardsiella Elffers & Kenn.-O'Byrne

      1. This genus is accepted, and its native range is S. Central Tropical Africa.

    [GB]

    nonem

    Habit
    Annual. Culms 7-18 cm long. Ligule a fringe of hairs.
    Inflorescences
    Inflorescence composed of racemes. Racemes borne along a central axis; spreading; unilateral. Central inflorescence axis tip filiform. Rhachis flattened; terminating in a barren extension; extension bristle-like. Spikelets spreading; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 6-12 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 1.6-2 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus bearded.
    Fertile
    Spikelets comprising 6-12 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 1.6-2 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus bearded.
    Glume
    Glumes deciduous; reaching apex of florets; firmer than fertile lemma. Lower glume lanceolate; 0.7-0.8 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate; mucronate. Upper glume lanceolate; 1.5 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein ciliate. Upper glume apex acuminate; mucronate.
    Florets
    Fertile lemma elliptic; hyaline; keeled; 1 -veined. Lemma margins ciliate. Lemma apex obtuse; mucronate. Palea 1 length of lemma; 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2. Anthers 2.
    Fruits
    Caryopsis with free soft pericarp. Embryo 0.5 length of caryopsis. Hilum punctiform.
    Distribution
    Africa.
    [FZ]

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

    Inflorescences
    Inflorescence comprising several distichously arranged racemes on an elongated central axis, this with a naked filiform apex; racemes delicately incurved when dry, terminating in a naked bristle, the spikelets subsessile, contiguous, biseriate, spreading at right angles.
    Spikelets
    Spikelets 6–12-flowered, laterally compressed, disarticulating above the glumes and between the florets; glumes 1-nerved, membranous, lightly keeled, shortly awned at the apex, the inferior shorter than the spikelet, the superior as long as the spikelet; lemmas 1-nerved, membranous, dorsally rounded, ciliate on the margins, obtuse to obscurely emarginate at the apex, sometimes mucronate; palea keels pectinate-ciliate.
    Fruits
    Caryopsis ellipsoid, with free pericarp.

    Images

    Distribution

    Native to:

    Zambia, Zaïre

    Richardsiella Elffers & Kenn.-O'Byrne appears in other Kew resources:

    First published in Kew Bull. 11: 455 (1956 publ. 1957)

    Literature

    Flora Zambesiaca
    • in Kew Bull. 1957: 455 (1957).

    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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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