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  1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus subtilis Kunth

        This species is accepted, and its native range is W. Tropical Africa to Tanzania and S. Africa, Madagascar.

    [FZ]

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

    Inflorescences
    Panicle 5–18 cm long, broadly ovate, very diffuse; primary branches not in whorls, usually solitary or paired, sometimes the lowermost clustered but not truly whorled, subdichotomously branched, the branchlets and pedicels capillary, smooth or scaberulous, eglandular, widely diverging, with a distinct pulvinus in the axils, this bearded with long white hairs c. 4 mm long, the spikelets evenly distributed.
    Spikelets
    Spikelets (1.1)1.3–3.1(4) mm long, dark green; glumes subequal, 1/2–4/5 the length of the spikelet, lanceolate to narrowly ovate, the inferior 0- to 1-nerved, the superior 1-nerved, glabrous, acute or acuminate at the apex; lemma as long as the spikelet, distinctly 3-nerved, ovate, obtuse to subacute at the apex; palea similar to the lemma but 2-nerved; rhachilla produced, 1/4 as long to as long as the lemma, rarely absent, glabrous, sunk between the close-set keels of the palea; anthers 3, 0.7–1.2(1.9) mm long.
    Fruits
    Grain 0.8–1 mm long, oblong to cylindrical, with rounded top and oblique base, ± square in section.
    Habit
    Densely caespitose perennial arising from a short scaly rhizome; culms up to 60(80) cm tall, erect, unbranched; basal leaf sheaths chartaceous, glabrous, terete, persistent or eventually disintegrating into a cushion of fibres; leaf laminas 3–20 cm long, involute-filiform, glabrous or thinly pilose on the surface, cartilaginous on the margins.
    [FTEA]

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

    Habit
    Densely tufted perennial, the base often coated with the fibrous remains of old leaf-sheaths; culms 20–60 cm. high, arising from a short scaly rhizome.
    Leaves
    Leaf-blades filiform, 4–15 cm. long.
    Inflorescences
    Panicle broadly ovate, 4–18 cm. long, diffuse, the primary branches borne singly or in pairs (sometimes the lowermost whorled); branches capillary, bearded in the axils with white hairs ± 4 mm. long.
    Spikelets
    Spikelets 1.5–3 mm. long; glumes subequal, lanceolate, 0.7–2 mm. long, 1/2–2/3 as long as the spikelet, acuminate; lemma ovate, 1.5–3 mm. long, 3-nerved, obtuse to subacute; palea similar to the lemma, but 2-nerved; rhachilla extension 1/2 to as long as the spikelet, glabrous, sunk between the close-set keels of the palea; anthers 3, 0.4–1.4 mm. long.
    Fruits
    Grain cylindrical, 1 mm. long, with rounded top and oblique base.
    Figures
    Fig. 103, p. 387.
    Habitat
    Wet soils and seepage zones in grassland; 2100 m.
    Distribution
    T7 Sierra Leone to Zaire and southwards to South Africa
    [FWTA]

    Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

    Habit
    Densely tufted perennial 30–46 cm. high, with coarsely fibrous base.
    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; scaly. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect; 20-60 cm long. Ligule a fringe of hairs. Leaf-blades filiform; convolute; 4-15 cm long; 1-2 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; effuse; 4-18 cm long. Primary panicle branches 1-2 -nate; not whorled, or whorled at lower nodes. Panicle branches capillary; bearded in axils (hairs 4mm long). Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; subterete; 1.5-3 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; subterete; 1.5-3 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate; 0.7-2 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 0.7-2 mm long; 0.5-0.66 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
    Florets
    Fertile lemma ovate; 1.5-3 mm long; membranous; without keel; 3 -veined. Lemma apex obtuse, or acute. Palea 2 -veined. Palea keels approximate. Rhachilla extension 0.5-1 length of fertile floret.
    Flowers
    Anthers 3; 0.4-1.4 mm long.
    Fruits
    Caryopsis with free soft pericarp; fusiform; 1 mm long.
    Distribution
    Africa: west tropical, west-central tropical, east tropical, southern tropical, south, and western Indian ocean.
    Reference
    Eragrostideae. FTEA.

    Images

    Distribution

    Native to:

    Angola, Cape Provinces, Congo, KwaZulu-Natal, Liberia, Madagascar, Mozambique, Nigeria, Northern Provinces, Sierra Leone, Tanzania, Zambia, Zaïre, Zimbabwe

    Synonyms

    Other Data

    Sporobolus subtilis Kunth appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dybowski [s.n.], Congo K000365273 Unknown type material
    Schlieben, H. J. [8165], Madagascar K000244780

    Bibliography

    First published in Révis. Gramin. 2: 421 (1831)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Cope, T. (1999). Flora Zambesiaca 10(2): 1-261. Royal Botanic Gardens, Kew.
    • Clayton, W.D., Phillips, S.M., Renvoize, S.A. (1974). Gramineae Flora of Tropical East Africa 2: 177-449.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.
    • Bosser, J. (1969). Gramiées des pasturages et des cultures a Madagascar: 1-440. ORSTOM, Paris.

    Literature

    Flora of West Tropical Africa

    • A. Chev. in Rev. Bot. Appliq. 14: 115.
    • Rev. Gram. 2: 421 (1831)

    Kew Backbone Distributions

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Clayton, W.D., Phillips, S.M., Renvoize, S.A. (1974). Gramineae Flora of Tropical East Africa 2: 177-449.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

    Flora of Tropical East Africa

    • Clayton in Flora of West Tropical Africa, ed. 2, 3: 410 (1972).
    • D.M. Napper, Grasses of Tanganyika: 48 (1965).
    • Kunth, Rév. Gram. 2: 421 (1831).

    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

    Flora of West Tropical Africa
    Flora of West Tropical 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