Ranunculus biternatusRanunculus biternatus, the Antarctic buttercup, is a plant in the buttercup family Ranunculaceae. It is native to southern South America and some subantarctic islands.DescriptionRanunculus biternatus grows as a forb. The leaves are mid to dark green, with at least three leaflets, each up to across. The flowers are yellow. The red or purple fruits resemble raspberries and are edible.Distribution and habitatRanunculus biternatus is native to Patagonia, the Falkland Islands and a number of subantarctic islands. The species is common in or near wet areas such as bogs, pools and streams, from sea level to altitude.