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. Symphyotrichum frondosum -  Symphyotrichum frondosum (formerly Aster frondosus) is a species of aster known by the common name short-rayed alkali aster.
A:
Plant