(Prunus havardii)
Prunus havardii, called Havard's plum, is a rare North American species of shrub tree native to western Texas in the United States and to northern Chihuahua across the R-o Grande in Mexico. It is in the genus Prunus in the rose family, Rosaceae. It has white flowers and stiff spiny branches. Its height is about 1.5 metres (4.9 ft)