Prickly Smartweed
Polygonum bungeanum
Family: Polygonaceae
What it is like
A herb. It grows each year from seed. The stems are erect and 30-80 cm tall. The leaves are 4-13 cm long by 1-3 cm wide.
There are about 50 Polygonum species.
Where it is found
It is a temperate plant. In northern China it grows from sea level to 1,700 m above sea level.
Countries/locations it is found in
Asia, China, Japan, Korea, Russia
How it is used for food
Edible parts
Leaves, seeds