hazel alder Betulaceae Alnus serrulata (Aiton) Willd. Listen to the Latin play symbol: ALSE2 Other Fact Sheets
Leaf: Alternate, simple, obovate to elliptical, 2 to 4 inches long, pinnately-veined, finely serrated wavy margin, dark green above, paler and finely hairy beneath.
Flower: Species is monoecious; both males and females preformed; males green brown catkins, 1 to 1 1/2 inches; female 1/2 inch long, reddish, opening in early spring.
Fruit: Woody, cone like catkin, 1/2 inch long, dark brown with each scale enclosing a tiny, winged seed. Fruit ripens in fall and is very persistant.
Twig: Reddish brown with gray fuzz, 3-angled pith; buds are stalked, plump, covered in 2 to 3 red-purple scales, resemble a match head.
Bark: Thin, gray to brown and smooth, trunk fluted.
Form: A multi-stemmed small tree or large shrub with several twisted stems reaching up to 15 feet tall.

Looks like: speckled alder - European black alder - beaked hazel - hornbeam
leaf flower fruit twig bark form1 map
Additional Range Information:
Alnus serrulata is native to North America.
Range may be expanded by planting.
See states reporting hazel alder.
External Links:
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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