Japanese name: ナガバギシギシ Scientific name:Rumex crispus
[Overview]
A perennial 80–150 cm tall, found along roadsides and in vacant lots.
It has thick yellow roots.
The stem is not reddish, erect, and branches in the upper part.
There are basal leaves and stem leaves; the basal leaves usually remain during the flowering season.
The stem leaves are simple and alternate, 10–30 cm long and 3–8 cm wide, lanceolate to oblong, with finely wavy margins.
They have short petioles, and the upper leaves gradually become smaller and turn into bract leaves.
The flowers are borne in a panicle-like inflorescence and have bracts.
The flowers are small and have no petals.
The sepals are winged, broadly ovate and entire-margined, usually with one knob-like projection in the center; the other two are absent or small and inconspicuous.
The fruit is an achene.
[History]
It was collected and named in Tokyo in 1891 by Makino Tomitaro.
