Given the question: Xanthophyllum longum -  Xanthophyllum longum is a tree in the family Polygalaceae. The specific epithet longum is from the Latin meaning long referring to the petioles. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer is:
Plant