Photographs: Garinish, Co. Cork

Fool's Water-cress Helosciadium nodiflorum (Apium nodiflorum) Gunna uisce Family: Apiaceae Flowering time: July-September. Perennial. Native. Short-stalked umbels of small white flowers, usually with 3-15 rays. Ovoid fruit, longer than wide with thick ridges. No bracts but numerous bracteoles. The leaves are pinnate with toothed, lobed, oval leaflets. A hairless plant with semi-erect or creeping hollow stems that root at the lower nodes. Height to 80cm Frequent in bare muddy places, ditches, streams and by lakes and rivers. Similar: Lesser Water-parsnip, Berula erecta

Fool's Water-cress, Helosciadium nodiflorum (Apium nodiflorum), Gunna uisce