The Victoria amazonica has very large leaves, up to 3 m (10 ft) in diameter, that float on the water’s surface on a submerged stalk, 7–8 m (23–26 ft) in length. The species was once called Victoria regia after Queen Victoria, but the name was superseded. V. amazonica is native to the shallow waters of the Amazon River basin, such as oxbow lakes and bayous. It is depicted in the Guyanese coat of arms. They take up to 48 hours to fully bloom. The flowers are white the first night they are open and become pink the second night.