- Ceratophyllum demersum L. - Rigid Hornwort - Ceratophyllaceae
© Ralph Forbes
© Ralph Forbes
© Alan Hill
(Map updated: March 2008)
The commoner of the two hornworts in Northern Ireland. A submerged aquatic plant of lakes and drains, unevenly distributed about the Province, with one particular stonghold in Co. Down.
All names: Ceratophyllum demersum L.
NBN Atlas mapping: Species account : NBN Atlas UK Species Observations database
iNaturalist: Species account : iNaturalist World Species Observations database