Description: A tall and handsome aquatic or marsh plant whose distribution is centred mainly in the Lough Neagh and Lough Erne basins and in the lakes of eastern Co Down. It also grows along the Newry Canal and the Lower Bann.

All names: Butomus umbellatus L.

Distribution Map from NBN: Butomus umbellatus at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Butomus umbellatus at iNaturalist World Species Observations database.