Nuphar lutea

Common Names: Yellow water-lily, brandy-bottle
Category: Plants
Sub-category: Water lilies

Roots in the sediment and leaves float on the water surface; it can grow in water up to 5 meters deep. The flower is solitary, terminal, held above the water surface; it is hermaphrodite, 2 to 4 cm diameter, with five or six large bright yellow sepals and numerous small yellow petals largely concealed by the sepals. The flower is followed by a green bottle-shaped fruit, containing numerous seeds which are dispersed by water currents.

Grows in shallow water and wetlands. Flowering is from June to September.

Edible Notes: The seeds are edible, and can be ground into flour. The root is edible too, but can prove to be incredibly bitter in some plants.
Warnings: Not known to be dangerous.