Flora of Northern Ireland
  • Lemna trisulca L. - Ivy-leaved Duckweed - Lemnaceae
Lemna trisulca
© Ralph Forbes
Lemna trisulca
(Map updated: March 2008)

All other duckweeds float on the surface of ponds, canals or other water-bodies, but this species floats below the surface. The individual plants are composed of tiny oval 'leaves' with a stalk at one end. Each 'leaf' has either one root or none, and they are joined together by their stalks to form clusters or chains of plants.

All names: Lemna trisulca L.