Polygonum polyneuron, an 80cm-in-height annual herb,
occurs at seashores, the stems well-branching at the bases. Leaves,
0.5-3cm in length, are long-oblong or oblanceolate, taking on a dark
brown tinge. Leaf axils make two or three flowers in the way of a
bundle; the perianths, each 1.5-3mm long, are cleft in five and
green, and the margins with white to light red turn red after
flower. Boom time: September-October.
Wild plants in and around Shimane
島根とその周辺の野生植物
