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  1. Family: Poaceae Barnhart
    1. Vossia Wall. & Griff.

      1. This genus is accepted, and its native range is Africa, Assam to Indo-China.

    [GB]

    nonem

    Habit
    Perennial. Culms prostrate; 100-200 cm long; spongy; rooting from lower nodes. Ligule a ciliate membrane.
    Inflorescences
    Inflorescence composed of racemes. Racemes single, or paired, or digitate. Rhachis fragile at the nodes; angular. Rhachis internodes cuneate. Rhachis internode tip transverse; flat. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels cuneate; tip rectangular.
    Spikelets
    Companion sterile spikelets well-developed; separately deciduous. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 20-40 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; attached transversely.
    Sterile
    Companion sterile spikelets well-developed; separately deciduous.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 20-40 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; attached transversely.
    Glume
    Glumes firmer than fertile lemma. Lower glume ovate; 2-5 length of upper glume; coriaceous; 2-keeled; winged on keel. Lower glume intercarinal veins distinct. Lower glume surface flat. Lower glume apex caudate. Upper glume ovate; chartaceous; 1-keeled; 5-9 -veined. Upper glume apex acuminate; mucronate.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret oblong; hyaline; 2 -veined. Fertile lemma oblong; hyaline; without keel; 3 -veined. Lemma margins ciliolate. Lemma apex acute.
    Distribution
    Africa, or Tropical Asia.
    [FTEA]

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

    Habit
    Aquatic perennial
    Leaves
    Leaf-blades flat; ligule a short pilose membrane
    Inflorescences
    Inflorescence composed of digitate racemes, borne terminally; racemes ± flattened; internodes and pedicels thickened, clavate
    Spikelets
    Sessile spikelet flat or slightly convex across the back; callus truncate, without a pronounced central peg; lower glume coriaceous, 2-keeled, smooth except for the scabrid keels, narrowly winged above and drawn out into a long linear flattened tail; lower floret ♂, with hyaline lemma and palea; upper lemma entire and awnless Pedicelled spikelet resembling the sessile.
    Sessile
    Sessile spikelet flat or slightly convex across the back; callus truncate, without a pronounced central peg; lower glume coriaceous, 2-keeled, smooth except for the scabrid keels, narrowly winged above and drawn out into a long linear flattened tail; lower floret ♂, with hyaline lemma and palea; upper lemma entire and awnless
    Pedicelled
    Pedicelled spikelet resembling the sessile.
    [FZ]

    Gramineae, T. A. Cope. Flora Zambesiaca 10:4. 2002

    Habit
    Aquatic perennial.
    Ligules
    Ligule a short pilose membrane; leaf laminas flat.
    Inflorescences
    Inflorescence composed of digitate or subdigitate racemes, borne terminally; racemes ± flattened, tardily disarticulating; internodes and pedicels thickened, clavate, hollowed at the summit.
    Spikelets
    Sessile spikelet flat or slightly convex across the back; callus truncate with an irregular central convexity and without a pronounced central peg; inferior glume coriaceous, 2-keeled, smooth except for the scabrid keels, narrowly winged above and drawn out into a long linear flattened tail; inferior floret male, with hyaline lemma and palea; superior lemma entire and awnless. Pedicelled spikelet resembling the sessile; pedicel free.

    Images

    Distribution

    Native to:

    Angola, Assam, Bangladesh, Benin, Botswana, Burkina, Burundi, Cameroon, Caprivi Strip, Central African Repu, Chad, Congo, Egypt, Ethiopia, Gabon, Gambia, Ghana, Ivory Coast, Kenya, Malawi, Mali, Mauritania, Mozambique, Myanmar, Namibia, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, Somalia, Sudan, Tanzania, Thailand, Uganda, Vietnam, Zambia, Zaïre, Zimbabwe

    Accepted Species

    Other Data

    Vossia Wall. & Griff. appears in other Kew resources:

    Bibliography

    First published in J. Asiat. Soc. Bengal 5: 572 (1836)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of West Tropical Africa

    • F.T.A. 9: 41 (1917), nom. cons.
    • in J. Asiat. Soc. Bengal 5: 572 (1836)

    Flora Zambesiaca

    • in J. Asiat. Soc. Bengal 5: 572 (1836), nom. conserv.

    Flora of Tropical East Africa

    • in Journ. Asiat. Soc. Bengal 5: 572 (1836), nom. conserv.

    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 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