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. Rhamnidium -  Rhamnidium is a genus of plant in family Rhamnaceae. Species include: Rhamnidium caloneurum Standl. Rhamnidium dictyophyllum Urb.
The answer to this question is:
Plant