The tall buttercup, also known as Ranunculus acris, is a flowering plant that belongs to the family Ranunculaceae. This plant is characterized by its tall stems that can reach up to three feet in height, and its bright yellow flowers that bloom from late spring to midsummer. While the name "tall buttercup" is the most common identifier for this plant, there are several other synonyms that can be used, such as meadow buttercup, giant buttercup, and common buttercup. These names stem from the plant's widespread distribution and prominence in meadows and fields across Europe and North America.