The previous page is sending you to https://www.semanticscholar.org/paper/Bidens-frondosa-(Asteraceae)-a-new-alien-species-%C5%A0umberov%C3%A1-Tzonev/ba5c83bd1e99a0528ae29e2df8e1a50c09d773cf/figure/0.

 If you do not want to visit that page, you can return to the previous page.