Spiked Water-milfoil - Myriophyllum spicatum

    Alt Name
    Spiked Water Milfoil

    Spiked Water-milfoil has slender stems up to 2.5 metres long. The submerged leaves, usually between 15 and 35 mm long, are borne in whorls of four, pinnate, with the numerous thread-like leaflets, 4 to13 mm long. It has minute, dull red flowers in spikes above the water surface, in summer.

    Similar Species

    Myriophyllum alterniflorum

    Identification difficulty
    Recording advice

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


    A submerged aquatic plant of rivers, canals, lakes and ponds.

    When to see it

    Flowers in June and July.

    Life History


    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Local in Leicestershire and Rutland, but can be abundant where it occurs. In the 1979 Flora survey of Leicestershire it was found in 25 of the 617 tetrads.

    Leicestershire & Rutland Map

    UK Map