Euphorbia prostrata
 Euphorbia prostrata is a species of euphorb known by the common name prostrate sandmat. It is native to the West Indies and certain parts of South America but it is widely naturalized in many other parts of the world where it can be found in varied habitat types and in many areas grows as a roadside weed. This is an annual herb producing slender prostrate stems up to about 20 centimeters long sometimes purple-tinted in color.