Irish wildflowers

Nasturtium officinale / Rorippa nastutium-aquatica
Family: Brassicaceae

Flowering time: June-September. Perennial. Native.

Small, white, 4-petalled flowers on erect flowering shoots. Cylindrical fruit with double row of seeds. Pinnate dark-green leaves, leaflets oval. Remain green through winter. Creeping, branched stems, rooting in mud. Water-cress growing in polluted water or areas with sheep may be infected with liver fluke - do not eat.

Very frequent. Shallow streams, ditches, muddy places.

Similar: Narrow-fruited Water-cress

Water-cress. Ballingeary, Co.Cork. October 2007

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