Japanese name: アレチギシギシ Scientific name:Rumex conglomeratus
[Overview]
A perennial 30–130 cm tall, found in wasteland.
The stem is often reddish, erect, and produces many branches.
There are basal leaves and stem leaves; the basal leaves have withered by the flowering season.
The stem leaves are simple and alternate, 4–20 cm long, oblong to lanceolate, with wavy margins and petioles.
The flowers are whorled at the upper part of the stem and at each node of the branches, and have bracts.
The flowers are small and have no petals.
The sepals are winged, ovate and entire-margined, with the knob-like projection in the center occupying most of the sepal.
The knob-like projections are reddish brown.
The fruit is an achene.
