Hippobroma longiflora, also called Star of Bethlehem or madamfate, is a flowering plant in the family Campanulaceae. It is the only species in the genus Hippobroma. It is endemic to the West Indies, but has become naturalized across the American tropics and Oceania. When uprooting this weed, it is important to wear gloves: the sap is an irritant which can be absorbed through the skin, and a small amount of sap in the eyes can cause blindness.