Alnus glutinosa (black alder)
Home > Labs | Hierarchy > f. Betulaceae > Alnus glutinosa > wiki
Notes
Key Characteristics
- Leaves are alternate, simple, round, dark green above, and doubly serrate with a rounded, slightly indented tip
- They grow excurrently with ascending branches
- Bark is purplish brown to gray brown
- Twigs have stalked valvate buds and triangular pith
- This tree is medium to large, fast growing, and rare usually seen in riparian zones in SE Michigan where they lower the water table and fix nitrogen
- The samaras are borne on woody catkins, woody, conelike, and persistent
Sourced from a field lab in Fall 2011
Comments
Pictures
From Les Mehrhoff