Persicaria lapathifolia is similar to persicaria maculosa, differing in the hairy (vs hairless) leaves and stems, and by having ochrea that lack long hairs along the upper margin.
Main flower color:
England, Wales, most of Ireland and lowland regions of Scotland
Up to 90 cm
Arable fields, waste and disturbed ground
Pure white, reddish-white or greenish white, in elongated spikes. The ochreas, the sheaths below each flower and leaf stalk, have a sparsely hairy surface, as do the yellowish-green stems
Narrowly ovate, up to 7 cm long, sparsely hairy, especially along the margins. Often marked with a dark patch at the centre
June to October