The Fool’s Watercress (Helosciadium nodiflorum) is a flowering, perennial, aquatic plant in the Apiaceae family.
It is found in wetlands, streams, and roadside ditches in western Europe.
It grows to 100 centimetres (39 inches) tall.
The Fool’s Watercress has a thick, hollow stem and glossy leaves. The leaves are dark-green and paler on the underside.
The flowers are clustered into white ball-like spheres.
The Fool’s Watercress blooms in July and August in the Northern Hemisphere.
Photographed in the Paris Botanical Garden, France, April 2023.
Photographer: Martina Nicolls