Noun | 1. | ![]() magnoliid dicot genus - genus of dicotyledonous flowering plants regarded as among the most primitive of extant angiosperms blue cohosh, blueberry root, Caulophyllum thalictrioides, Caulophyllum thalictroides, papoose root, papooseroot, squaw root, squawroot - tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally |