Floating Sweet-grass - Glyceria fluitans


    A hairless grass with creeping and rooting stems, often floating below in wetter habitats, but with erect ascending inflorescences 25 to 80 cm. Leaves flat, ribbon like 5 to 10 mm wide. Inflorescences little branched or unbranched 10 to 50 cm long, spikelets 15 to 30 mm long linear and cylindrical in shape, glossy grey green, with up to 20 florets.

    Similar Species

    other Glyceria

    Identification difficulty
    ID guidance

    Larger lemmas (5.5mm +) than G notata or declinata, not toothed at apex; panicles sparsely branched and narrow

    Recording advice

    The County Recorder has asked for a specimen of this plant to be retained for verification


    Often with its 'feet' in still or slow flowing fresh water, or in the muddy margins of pools etc.

    When to see it

    May to August.

    Life History


    UK Status

    Very common in suitable habitats throughout Britain.

    VC55 Status

    Frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 335 of the 617 tetrads.

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    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map