Buxus vahlii
 Buxus vahlii (Vahl's boxwood) is a rare species of plant in the boxwood family. It is native to Puerto Rico and St. Croix in the U.S. Virgin Islands where it is known from no more than four populations total. It has probably never been very common but its distribution has been reduced by deforestation and other human disturbance of its habitat. At the time it was listed as an endangered species of the United States in 1985 it was thought to be endemic to Puerto Rico.