Irish wildflowers BSBI map

Fen Pondweed, Potamogeton coloratus, Liach eanaigh
Photographs: Rinecaha, the Burren, Co. Clare

Fen Pondweed
Potamogeton coloratus
Liach eanaigh
Family: Potamogetonaceae

Flowering June - July. Aquatic perennial. Native.

Very small flowers with four perianth segments and stamens. The separate carpels ripen to small nutlets. The floating leaves are oval to elliptical-lanceolate, +/- translucent with clearly visible cross-veins. Narrow submerged leaves.

Most frequent in central Ireland in shallow water in calcareous fens and peaty ditches.

Similar: Bog Pondweed, Potamogeton polygonifolius

Fen Pondweed, Potamogeton coloratus, Liach eanaigh

Fen Pondweed, Potamogeton coloratus, Liach eanaigh
Fen Pondweed, Potamogeton coloratus, Liach eanaigh

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