Rock polypody
Polypodium virginianum
Family: Polypodiaceae
What it is like
A fern. The leaves are 40 cm long and leathery.
Where it is found
It is a temperate plant. It grows on cliffs and rocky slopes. It suits hardiness zones 5-8.
Countries/locations it is found in
Asia, Canada, Korea, Mongolia, North America, USA
How it is used for food
The rhizome is sun dried and stored for later use. The rhizome can be eaten fresh. They have been used as a substitute for sugar.
Edible parts
Rhizome, root