Persicaria pubescens is
an annual herb height of 0.5-1m at the water edges. The leaves are
opposite, 5-10cm in length, lanceolate to broadly lanceolate, the
tips pointed, and the central parts have blackish speckles.
Inflorescences, 5-10cm in length, bow at the ends, setting sparsely
light red-purple flowers; perianths, approximately 3mm in size, is
cleft in five, Ochreas are cylindrical, 0.8-1.3cm long, with long
hairs on the edges. Bloom time: September-October.