Photographs: Inchigeelagh, Co. Cork

Lesser Knotweed Koenigia campanulata (Persicaria campanulata) Glúineach an chlúimh Family: Polygonaceae Flowering: June-October. Perennial. Introduced. Branched spikes of bell-shaped pink-white flowers. The leaves are lanceolate to ovate and downy underneath. Not recorded as setting seed, instead spreads from rhizome fragments. Ascending stems to 1m. An occasional garden escape or relic of cultivation on damp ground on roadsides, in woodland and near streams.

Lesser Knotweed, Koenigia campanulata (Persicaria campanulata), Glúineach an chlúimh