oregon yampa plant 2019-08-25T15:26:22Z Edible Uses: Root - raw or cooked. A pleasant nutty taste. The root can also be dried and stored for later use. [https://pfaf.org/user/Plant.aspx?LatinName=Perideridia+oregana] Perideridia oregana is a species of flowering plant in the carrot family known by the common names Oregon yampah and eppaw. It is native to Oregon and California in the western United States, where it grows in woodland and other habitat. eppaw vegetable-producing plant, root, tuber or bulb