Not an accepted name (status: unknown). The accepted name is Trapa natans var. bispinosa (Roxb.) Makino, 1897.

Trapa natans var. bicornis (Osbeck) Makino, 1753 4% complete

No common name

Sp. Pl.: 120 (1753)

There is no corrections for Trapa natans var. bicornis yet.