Akouangou - 111 - Gabon
Bush - 569 - United States
Ceratophyllum demersum
Clemens - s.n. - United States
Correll - 31020 - United States
Crutchfield - 1608 - United States
Drushel - 8801 - United States
Fernández Zúñiga - 2cera - Costa Rica
Fleetwood - 10353 - United States
Gibson - 6611 - United States
Gruchy - 49 - United States
Lindheimer - s.n. - United States
McCart - 1846 - United States
Paxson - 16T498B - United States
Schulze - s.n. -
Stevens - 322 - United States
Tharp - s.n. - United States
Trelease - s.n. - United States
Yatskievych - 07-124 - United States
Yatskievych - 17-128 - United States