Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Cornutia obovata - Cornutia obovata is a rare species of tree in the mint family and formerly considered a member of the verbena family. It is endemic to forested slopes in Puerto Rico where its common names are capa jiguerilla nigua and palo de nigua. When it was added to the endangered species list of the United States in 1988 there were only seven individuals known to remain in the wild. By 1998 there were eight plants known.
Plant