Rosebay willowherb, Chamaenerion Angustifolium, Side view of masses of pink flowers beside a canal.

Rosebay willowherb, Chamerion augustifolum, Seeds on umbellifera.

White-flowered rosebay willowherb, Chamaenerion angustifolium 'Album'.

White-flowered rosebay willowherb, Chamaenerion angustifolium 'Album'.

Rosebay willowherb, Chamerion augustifolium, growing wild in Holkham, Norfolk, England.

Rosebay Willowherb, Chamerion augustifolium.

Rosebay Willowherb, Chamerion augustifolium.

Rosebay Willowherb, Chamerion augustifolium.

Rosebay Willowherb, Chamerion augustifolium.

Rosebay willowherb, Chamerion augustifolium.