Mountain alder
- Latin name: Alnus incana ssp. tenuifolia (Nutt.) Breit.
- French name: Aulne à feuilles minces
- Synonym(s): Thinleaf alder
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Taxonomic Serial Number: 181889
19477 [syn. A. tenuifolia Nutt.]
Description
Leaves
Form
- Thinner and smoother than speckled alder
- Veins not impressed into the upper surface
Buds
Form
- Fine hairs
Colour
- Bright red
Twigs
Form
- Slender, hairy
Colour
- Light green
Flowers
Form
- Mature seed catkins in groups of 2–5 on slender stalks
Length
- 9–13 mm
Structure
- Monoecious
Bark
Form
- Not as conspicuously marked with lenticels as speckled alder
- With age becoming scaly
Colour
- Grey or reddish-grey
Size
Height
- To 10 m
Habitat
Site
- Stream banks
Insects and diseases
Insects
Diseases
Insects and diseases that are found most frequently and/or that cause the most damage in our Canadian forests.
Distribution map

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