Persicaria lapathifolia var. incana is
an annual herb height of 30-60cm found on roadsides or fields. It is
seemingly Polygonum lapathifolia var. lathifolia, but it is
comparatively more minor than that; nodes not swollen. Leaves of
4-12cm are in the lanceolate shape, and occasionally, dense fluffs
occur on the bottom sides. Inflorescences,1-5cm in length, droop
not, and perianths are light red or white. Bloom time: May-October.