Nitella sp.; drawing © University of Florida/IFAS Center for Aquatic and Invasive Plants, used with permission
Nitella sp.; drawing © University of Florida/IFAS Center for Aquatic and Invasive Plants, used with permission
Nuphar lutea; plate: C.A.M. Lindman "Bilder ur Nordens Flora" (1901-1905) © 1999 Gerhard Keuck