Buttercup cousin is a term used to refer to three different types of flowers: ANEMONE (7 letters), Peony (5 letters), and LARKSPUR (8 letters). ANEMONE is a genus of flowering plants in the buttercup family, Ranunculaceae. Peony is a flowering plant in the family Paeoniaceae, native to Asia, Europe, and Western North America. LARKSPUR is a genus of flowering plants in the buttercup family, Ranunculaceae, with a wide range of varieties. All three of these flowers are related to the buttercup and share similar characteristics.