Are both genus, Goldenseal and Breynia, endemic to the same continent ?
Goldenseal: Goldenseal (Hydrastis canadensis), also called orangeroot or yellow puccoon, is a perennial herb in the buttercup family Ranunculaceae, native to southeastern Canada and the eastern United States. Breynia:  It is native to Southeast Asia, China, the Indian Subcontinent, Papuasia, Australia, and the island of Réunion.
no