by Science Staff
Not peer reviewed
Last modified: 01/29/2013
Alnus Mill., Gard. Dict. Abr. ed. 4., v.1 [“AL”]. 1754. LECTOTYPE: Alnus vulgaris Hill (=Alnus glutinosa (L.) Gaertn.) designated by Britton & Brown (1913).
Key to the species of Alnus
2. Leaves doubly serrate, undersides not resin-coated; bark
dark grayish to reddish-brown, with prominent whitish lenticels...Alnus incana
2. Leaves simply serrate or serrulate, undersides resin-coated; bark light gray, without prominent lenticels...3