prickly waterlily; Euryale ferox
An aquatic plant with large, spiny leaves; the name literally means 'demon lotus'.
The prickly waterlily spreads its large leaves over the surface of the pond.
Katakana spelling is standard for this plant name; usually written in kana.
Kanji form is rare; the katakana spelling is strongly preferred.
The name オニバス combines 鬼 (oni, 'demon') and 蓮 (hasu, 'lotus'), referring to the plant's large, thorny appearance. The exact historical derivation is uncertain.