Answer the following question: 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. Ambrosia psilostachya -  Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed perennial ragweed and western ragweed. It is native to most of North America including all of southern Canada nearly all of the continental United States and the northern half of Mexico. It is a common plant in many habitat types including disturbed areas such as roadsides. It can be found in parts of Eurasia as an introduced species.
Answer:
Plant