Buttercup relatives are a group of flowering plants that are related to the buttercup. These include larkspurs (9 letters), peonies (7 letters), and anemones (8 letters). All three of these plants are members of the Ranunculaceae family, which is known for its bright and colorful flowers. Larkspurs are tall, spiky plants with blue or purple flowers, while peonies are large, bushy plants with pink or white flowers. Anemones are smaller plants with delicate white or pink flowers. All three of these plants are popular garden additions and can be found in many gardens around the world.