Number of stems of the establishing individuals monitored over the years. (n = 20, except in 2018 n = 19).

 
 
  Part of: Ende LM, Lauerer M (2022) Spreading of the cup plant (Silphium perfoliatum) in northern Bavaria (Germany) from bioenergy crops. NeoBiota 79: 87-105. https://doi.org/10.3897/neobiota.79.94283