1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus olivaceus Napper

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

    [FTEA]

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

    Habit
    Tufted perennial, the basal sheaths indurated hard and shiny or breaking up into fibres; culms 10–90 cm. high.
    Leaves
    Leaf-blades convolute, up to 30 cm. long, ± 2 mm. wide, with a filiform tip.
    Inflorescences
    Panicle spiciform, 3–20 cm. long; primary branches short, appressed, densely spiculate, the lowest 0.5–1.5 mm. long.
    Spikelets
    Spikelets 2.6–4 mm. long, very dark green to almost black; lower glume oblong and obtuse to ovate and acute, 1.2–1.5 mm. long, hyaline; upper glume ovate, 1.6–2.4 mm. long, ± 1/2 as long as the spikelet, acute; lemma ovate-elliptic, as long as the spikelet, acute; anthers 3, 1.2–1.7 mm. long.
    Fruits
    Grain obovoid, 1.1–1.2 mm. long, rounded or truncate.
    Habitat
    Upland grassland and moorland; 2300–4000 m.
    Distribution
    K2 K3 K4 K5 T2 T4 T7 U1 U2 U3
    [FZ]

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

    Habit
    Caespitose perennial; culms up to 70(90) cm tall, erect, unbranched; basal leaf sheaths hard, shining and yellowish at first, glabrous or thinly pilose near the margins, terete, usually disintegrating into a cushion of persistent fibres; leaf laminas up to 30 cm × 3.5 mm, usually involute, rarely flat, faintly scaberulous on the surfaces or rarely thinly pilose above, thinly scabrid on the margins, the apex filiform.
    Inflorescences
    Panicle 3–20 cm long, spiciform; primary branches not in whorls, appressed to the main axis, 0.5–1.5 cm long, glabrous and smooth or thinly scabrid, eglandular, the spikelets densely arranged along their whole length.
    Spikelets
    Spikelets (2.4)2.9–3.4 mm long, dark olive-green to almost black; inferior glume 1/5–1/3 the length of the spikelet, oblong to obovate, hyaline, nerveless, glabrous, obtuse to acute at the apex; superior glume c. (1/2)2/3 the length of the spikelet, ovate, hyaline, 1-nerved, glabrous, acute at the apex; lemma as long as the spikelet, ovate-elliptic, acute; anthers 3, 1.2–1.7 mm long.
    Fruits
    Grain 1.1–1.2 mm long, obovate, rounded or truncate at the top, oblong in section.
    [GB]
    Habit
    Perennial; caespitose. Butt sheaths indurate; glossy; persistent and investing base of culm; with compacted dead sheaths, or fibrous dead sheaths. Culms erect; 10-90 cm long. Ligule a fringe of hairs. Leaf-blades convolute; 15-30 cm long; 1-2 mm wide. Leaf-blade apex filiform.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; 3-20 cm long. Primary panicle branches appressed; 0.5-1.5 cm long. Panicle branches glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 2.6-4 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 2.6-4 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; dissimilar; shorter than spikelet. Lower glume oblong, or ovate; 1.2-1.5 mm long; 0.6-0.75 length of upper glume; hyaline; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse, or acute. Upper glume ovate; 1.6-2.4 mm long; 0.5 length of adjacent fertile lemma; membranous; dark green, or black; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma ovate; 2.6-4 mm long; membranous; dark green, or black; without keel; 1 -veined. Lemma apex acute. Palea 2 -veined. Palea keels approximate.
    Flowers
    Anthers 3; 1.2-1.7 mm long.
    Fruits
    Caryopsis with free soft pericarp; obovoid; 1.1-1.2 mm long.
    Distribution
    Africa: northeast tropical, east tropical, and southern tropical.
    Reference
    Eragrostideae. FTEA.
    Diagnostic
    Grain rounded or truncate.

    Images

    Distribution

    Native to:

    Ethiopia, Kenya, Malawi, Tanzania, Uganda, Zambia

    Sporobolus olivaceus Napper appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Stolz, A, [2621], Tanzania K000365232 isotype
    Stolz, A, [2621], Tanzania K000365233 isotype

    First published in Kirkia 3: 117 (1963)

    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.
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Clayton, W.D., Phillips, S.M., Renvoize, S.A. (1974). Gramineae Flora of Tropical East Africa 2: 177-449.

    Literature

    Kew Backbone Distributions
    • Cope, T. (1999). Flora Zambesiaca 10(2): 1-261. Royal Botanic Gardens, Kew.
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Clayton, W.D., Phillips, S.M., Renvoize, S.A. (1974). Gramineae Flora of Tropical East Africa 2: 177-449.
    Flora of Tropical East Africa
    • D.M. Napper, Grasses of Tanganyika: 47 (1965).
    • Napper in Kirkia 3: 117 (1963).

    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

    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