Thread-leaved Water-crowfoot - Ranunculus trichophyllus

    Alt Name
    Thread-leaved Water Crowfoot
    Description

    The flowers are white with yellow centres and are 7 to 12 mm across. All leaves divided into threadlike segments.

    Similar Species

    Other crowfoots

    Identification difficulty
    ID guidance

    Ref. key in Stace.  The differences between species in this difficult subgenus are hard to tell from a photo.  Details of the flower petals and nectaries, and of the two types of leaf, are needed.  Capillary leaves are thread like, usually but not always submerged; and laminar are 'normal', usually floating or terrestrial, but not always.

    Recording advice

    Photograph: in habitat, of both kinds of leaf, and a close-up of flower.  Take a specimen, including both types of leaf, if present, and retain it until your record is verified; you may need to send the specimen to the County Recorder.  An explanation of how it fits the key in Stace is needed.

    Habitat

    Ponds, pond edges and rivers.

    When to see it

    May and June.

    Life History

    Perennial.

    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 43 of the 617 tetrads.

    It is listed as Native and Occasional, but less common than previously, in the current Checklist (Jeeves, 2011)

    Leicestershire & Rutland Map

    UK Map