Alnus glutinosa (Black Alder)
Trees in native environment, Marburg, Germany
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fagales
Family: Betulaceae
Genus: Alnus
Subgenus: Alnus
Species: A. glutinosa
Binomial name Alnus glutinosa L.
Catkins male(left) female (right)
source http://en.wikipedia.org/wiki/Alnus_glutinosa
