Marsh Ragwort (Senecio aquaticus)

Marsh Ragwort (Senecio aquaticus)

Observation - Marsh Ragwort (Senecio aquaticus). Description: The photo says it all. Can anyone help with an ID, please? Edit: Changed to match Tim's ID. Many thanks.

The photo says it all. Can anyone help with an ID, please?

Edit: Changed to match Tim's ID. Many thanks.