Two
species of Ceratophyllum are recorded in Britain. These include
the Rigid Hornwort (C. demersum) and Soft Hormwort (C.
submersum).The BSBI provide a downloadable plant cribs for the identification of species of Ceratophyllum.
No
Diptera miners are recorded mining Ceratophyllum in Britain
or elsewhere.
The
crambid Parapoynx
stratiotata feeds between spun leaves of Ceratophyllum
in Britain and elsewhere.