Green Alder
(Alnus viridis spp. crispa)

Other common names: Mountain Alder

French names: Aulne crispé

Family: Birch Family (Betulaceae)

Group: Alders

Distinctive features: Shrub

Similar species:
  •   European Black Alder (Alnus glutinosa) - leaves are indented at the tips, roundish.

  •   Speckled Alder (Alnus incana) - leaves are double-toothed.

  •   Alder-leaved Buckthorn (Rhamnus alnifolia) - not an Alder.


Flowers: Spring

Leaves: Alternate;  Simple;  Toothed

Habitat: Wet areas; also gravelly or rocky areas.

Books: Trees in Canada: 304   

Native/Non-native: Native

Status: Common

Notes: Easily confused with the other Alders.

See Also:
  •   Alder: The Nitrogen Fix, from The Monday Garden, by Sue Sweeney


Photographs: 63 photographs available, of which 10 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.

  

Upper side of a leaf. Note the small teeth. The leaf is not double-toothed like those of Speckled Alder (Alnus incana).

The leaf is somewhat pointed.

Underside of the same leaf.

Upper side and underside of a Green Alder leaf.

Leaves

For comparison, here are the leaves of the three Alders:
-Green Alder (Alnus viridis spp. crispa) (L)
-Speckled Alder (Alnus incana) (M)
-European Black Alder (Alnus glutinosa) (R).

Seed catkins.

Some Green Alder alongside a road in the north (James Bay Road website, Quebec).

A less typical Green Alder leaf.

Bark and trunk of a Green Alder shrub.
  

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