Photographs: the Gearagh, Co. Cork

Broad-leaved Pondweed Potamogeton natans Liach Bhríde Family: Potamogetonaceae Flowering time: May-September. Aquatic perennial. Dense spikes of tiny green/white flowers are held above the water level. The floating dark green leaves are oval to lanceolate with longitidual veins. Submerged grass-like modified leaf stalks. Common throughout Ireland in slow-moving freshwater. Identified by Paul Green

Broad-leaved Pondweed, Potamogeton natans, Liach Bhríde