Polygonum rigidum
Family: Polygonaceae
What it is like
A herb. It grows each year from seeds. It is 30-50 cm tall.
There are about 50 Polygonum species.
Where it is found
It is a temperate plant. It grows between 400-2,500 m above sea level.
Countries/locations it is found in
Asia, China, Manchuria, Mongolia, Russia
How it is used for food
The tips of the shoots are eaten.
Edible parts
Leaves, seeds