Water agrimony : A kind of bur marigold (Bidens tripartita) found in wet places in Europe.

Example:


Taxonomy
plant, botanical, Herbal, flower, Hemp, herb, Bur Marigold, Water Agrimony, Compositae, colour, Linn, Medicinal Action, autumn, ponds, ditches, the leaves, Bidens tripartita, stem.

Defination from the web:
... The Water Agrimony, now called the Bur Marigold is an annual flowering in late summer and autumn, abounding in wet places, such as the margins of ...