Sideroxylon alachuense, known by the common names Alachua bully, silver bully and silvery buckthorn, is a plant species native to the US States of Georgia and Florida. It grows in forested areas on hummocks or near lime sinks or shell middens, at elevations of less than 200 m (650 feet). The species is named for the locale where its type specimen was collected, the Alachua Sink inside Paynes Prairie Preserve State Park in Alachua County, Florida.