TROPICAL PLANT ENCYCLOPEDIA
Euryale ferox
Prickly Waterlily, Fox NutFamily: Nymphaeaceae
Origin: Eastern Asia
USDA Plant Hardiness Zone Map
The leaves have a quilted texture, although the stems, flowers, and leaves which float on the surface are covered in sharp prickles.
The plant is cultivated for its seeds in lowland ponds in India, China, and Japan.
Link to this plant:
https://toptropicals.com/catalog/uid/euryale_ferox.htm