The 2020 article linked below by Sarah Loftus for the
Miami Herald points out that Shoebutton is considered a Noxious Weed in Florida, and discusses the difficulties of preventing its spread. It also explains how to tell the invasive Shoebutton from a similar-looking native, Marberry:
"Shoebutton can look similar to a native shrub called the marlberry, but there are some key differences. Marlberry flowers and berries are at the ends of branches rather than the base of the leaves, and marlberry flowers are white."
"A century ago, it was a Florida landscape shrub. Now, it's a pest plant that keeps spreading"
https://www.miamiherald.com/ne...