Distinctive features: Shrub; Prominent lenticels (speckles) scattered all over the bark.
Similar species: European Black Alder (Alnus glutinosa) - leaves are roundish and indented at the tips. Green Alder (Alnus viridis) - leaves are not double-toothed. Alder-leaved Buckthorn (Rhamnus alnifolia) - not an Alder.
Typical leaf. Note two important characteristics:
1. The tip is pointed, not blunt (European Black Alder (Alnus glutinosa) leaves are blunt-tipped, or even indented at the tip).
2. The edges are double-toothed.
PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.
(Range map provided courtesy of the USDA website
and is displayed here in accordance with their
Policies)