1. Tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally
   "Native Americans used Caulophyllum thalictrioides for medicinal purposes";
   - blue cohosh, blueberry root, papooseroot, papoose root, squawroot, squaw root, Caulophyllum thalictroides

Type of: bush, shrub

Part of: Caulophyllum, genus Caulophyllum