Banara vanderbiltii is a rare species of plant in the willow family known by the common name palo de ramon. It is endemic to Puerto Rico, where there are fewer than 20 known individuals left in the wild. At the time it was listed as an endangered species of the United States in 1987, there were only six plants remaining. The plant was known to occur near San Juan long ago, but these occurrences have long since been extirpated by urban development. It now occurs only in one area along the northwestern coast, with one tiny population located near Cayey and a second, smaller one near Bayamón.