Thread-leaved Water-crowfoot - Ranunculus trichophyllus
The flowers are white with yellow centres and are 7 to 12 mm across. All leaves divided into threadlike segments.
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.
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.
Ponds, pond edges and rivers.
May and June.
Widespread and fairly frequent in Britain.
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
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