1. Family: Poaceae Barnhart
    1. Dignathia Stapf

      1. This genus is accepted, and its native range is Ethiopia to Mozambique, S. Arabian Peninsula, NW. India.

    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips And S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    Annuals or perennials
    Leaves
    Leaf-blades flat, narrow; ligule a membranous rim, ciliate along the top
    Inflorescences
    Inflorescence stiff, cylindrical, spike-like, dense or moderately open, with the spikelets in pedunculate deciduous clusters of 2–3; clusters racemose, the spikelets sessile on a very short curvaceous rhachis
    Spikelets
    Spikelets narrowly ovate to orbicular, laterally compressed, the upper reduced; glumes well developed, thickly indurated, with narrow hyaline margins, ± gibbous, scaberulous to lanose, the upper drawn out into a stiff point; lemma broadly ovate, shorter than the glumes, membranous, 3-nerved, terminating in a short awn-point; stamens 3
    Fruits
    Caryopsis ellipsoid, gibbous, laterally compressed.
    [FZ]

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

    Inflorescences
    Inflorescence a cylindrical false raceme; racemelets shortly pedunculate, deciduous, comprising 1–2 spikelets plus a rudiment separated by the internodes of a short curvaceous rhachis.
    Spikelets
    Spikelets 1-flowered, narrowly ovate to orbicular, laterally compressed; glumes well developed, longer than the floret, thickly indurated, ± gibbous, scaberulous to lanose, the superior longer than the inferior and caudate to a stiff point or awn; lemma membranous, keeled, shortly awned.
    Fruits
    Caryopsis ellipsoid, gibbous, laterally compressed.
    [GB]

    nonem

    Habit
    Annual (3), or perennial (2). Culms erect (3), or geniculately ascending (2), or decumbent (2); slender (1/1); 5-25.2-60 cm long; firm (1), or wiry (2), or woody (2). Lateral branches lacking (1/3), or sparse (1/3), or ample (1/3), or suffrutescent (1/3). Ligule a ciliate membrane. Leaf-blades persistent (3), or deciduous at the ligule (2); stiff (2), or firm (3).
    Inflorescences
    Inflorescence composed of racemes; subtended by an unspecialized leaf-sheath (4), or an inflated leaf-sheath (1); exserted (4), or embraced at base by subtending leaf (2). Racemes borne along a central axis; in a multilateral false spike; ascending (3), or spreading (2); linear (1), or oblong (4); unilateral; bearing few fertile spikelets; bearing 1 fertile spikelets on each (4), or 2 fertile spikelets on each (3), or 3 fertile spikelets on each (1). Rhachis deciduous from axis; flattened; terminating in a spikelet (1), or sterile spikelet (4). Raceme-bases brief (3), or cuneate (2). Spikelets solitary (3), or in pairs (4), or in threes (1). Fertile spikelets sessile; 1-2 in the cluster (2/2); subequal (2/2).
    Spikelets
    Spikelets comprising 1 fertile florets (4), or 3 fertile florets (1); without rhachilla extension. Spikelets lanceolate (1), or ovate (2), or orbicular (2); laterally compressed; symmetrical (2), or gibbous (3); 2-5-7 mm long; falling entire; deciduous with accessory branch structures.
    Fertile
    Spikelets comprising 1 fertile florets (4), or 3 fertile florets (1); without rhachilla extension. Spikelets lanceolate (1), or ovate (2), or orbicular (2); laterally compressed; symmetrical (2), or gibbous (3); 2-5-7 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes exceeding apex of florets (4/4); firmer than fertile lemma; parallel to lemmas (2), or recurved at apex (2), or gaping (1). Lower glume subulate (1), or lanceolate (4); gibbous; 0.7-0.9375-1 length of upper glume; cartilaginous (1), or coriaceous (4); 1-keeled (4/4); 1 -veined (4/4). Lower glume lateral veins absent (4), or distinct (1). Lower glume surface smooth (3), or scabrous (2); glabrous (2), or puberulous (1), or pubescent (1), or villous (1). Lower glume apex acute (2/4), or acuminate (1/4), or caudate (1/4); muticous (3/4), or awned (1/4). Upper glume lanceolate (2/4), or orbicular (2/4); gibbous; 1-1.187-1.7 length of adjacent fertile lemma; cartilaginous (1), or indurate (4); with undifferentiated margins (1), or hyaline margins (4); 1-keeled (4/4). Upper glume primary vein eciliate (3), or ciliolate (1), or ciliate (1). Upper glume surface smooth (3), or scabrous (2); glabrous (2), or puberulous (1), or pubescent (1), or villous (1); with simple hairs (2/3), or tubercle-based hairs (1/3). Upper glume apex acuminate (1/4), or caudate (3/4); muticous (3/4), or awned (1/4); 1 -awned (1/1).
    Florets
    Fertile lemma elliptic (1), or ovate; not gibbous (3), or gibbous (2); membranous (3), or cartilaginous (2); keeled; 3 -veined (4/4). Lemma midvein eciliate (1), or ciliolate (1), or ciliate (2), or pubescent (1). Lemma surface glabrous (4), or puberulous (1), or pubescent (1). Lemma apex acute (3), or acuminate (2); mucronate (3), or awned (2); 1 -awned (2/2). Palea 2 -veined (4/4).
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid (3/3); dorsally compressed (3/3); plano-convex (3/3).
    Distribution
    Africa, or Temperate Asia (1), or Tropical Asia (1).

    Images

    Distribution

    Native to:

    Ethiopia, India, Kenya, Mozambique, Oman, Somalia, Tanzania, Yemen

    Dignathia Stapf appears in other Kew resources:

    First published in Hooker's Icon. Pl. 30: t. 2950 (1911)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora Zambesiaca
    • in Hooker’s Icon. Pl. 30: t. 2950 (1911).
    Flora of Tropical East Africa
    • in Hook., Ic. Pl. 30, t. 2950 (1911)

    Sources

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

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    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