This section is from the book "Harper's Guide To Wild Flowers", by Caroline A. Creevey. Also available from Amazon: Harper's Guide To Wild Flowers.
Family, Crowfoot. Petals and sepals, 5. At the base of the petals a spot or indentation may be found. Stems about 1 foot long. Leaves, soft, finely cut, hair-like, with a dilated stem. They all float under water, and collapse when taken out.
A delicate, rather pretty plant, found in shallow, slow waters.
 
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