Description: An emergent aquatic plant similar to Alisma plantago-aquatica but with narrower leaves, and less common, being mainly found along the shores of Lough Neagh and Lough Beg.

All names: Alisma lanceolatum With.

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

iNaturalist: Alisma lanceolatum at iNaturalist World Species Observations database.