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Mountain Alder Alnus viridis ssp. crispa

 

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Mountain Alder
© Lady Bird Johnson Wildflower Center

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Alternate name: Green Alder

Family: Betulaceae, Birch view all from this family



Description A shrub to 9 ft., diminishing in mature height with greater altitude. Pendant, yellow-green male catkins appear before the oval, alternate leaves are fully out. Cone-like female flowers remain on the shrub all winter.


Habitat Bogs; shores; cold woods; balds.


Range Labrador to Alaska, south to New England mountains, n. New York, n. Michigan, n. Minnesota, Manitoba and n.w. Wyoming; rarely in mountains of Tennessee and North Carolina.


Discussion Alders fix nitrogen and thus serve as nutrient-giving pioneers in reclamation projects.


Comments Alders fix nitrogen and thus serve as nutrient-giving pioneers in reclamation projects.


Exposure Preference Partial sun.


Native Distribution Labrador to Alaska, s. to New England mts., n. New York, n. Michigan, n. Minnesota, Manitoba & n.w. Wyoming; rarely in mts. of Tennessee & North Carolina


Site Preference Bogs; shores; cold woods; balds


Soil Preference Rocky soils


 

 

 

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