Four-leaf madder
Rubia jesoensis
Family: Rubiaceae
What it is like
A climber. It keeps growing from year to year. It grows 60 cm long.
The roots have anthraquinones.
Where it is found
It is a temperate plant. It grows in shady places.
Countries/locations it is found in
Asia, Japan, Korea
How it is used for food
Edible parts
Leaves