Pale Persicaria (Persicaria lapathifolia)

Pale Persicaria (Persicaria lapathifolia)

Observation - Pale Persicaria (Persicaria lapathifolia) - UK and Ireland. Description: Red stems, red/pink flowers in tight groups, dark macula on the leaves. I didn't know you could get

Red stems, red/pink flowers in tight groups, dark macula on the leaves. I didn't know you could get a white form. This was in a recently re-seeded area of the park.
Edit: title changed in line with JoP's ID. Many thanks.