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Alnus glutinosa |
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Common Alder, Black or European Alder |
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3 to 7 |
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Pyramidal to oblong canopy often grown multi-stemmed. |
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40 to 60 feet with a spread of 20 to 40 feet - Fast
growth rate. |
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monoecious, reddish brown male flowers in 2
to 4” long catkins, 3 to 5 together in
March. |
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Alternate, simple, 2 to 4” long, 3 to 4” wide,
oval or orbicular to suborbicular, usually broad cuneate,
very gummy when young, rounded or emarginate at apex,
coarsely and doubly serrate, dark green, glabrous above,
axillary tufts beneath, 6 to 8 vein pairs; petiole 1/2
to 1” long. |
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Nutlet borne in a
small, 1/3 to 1/2 inch long oval strobile on a
1/2 to 1 inch long peduncle. |
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Might be used in
difficult, wet sites. |
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'Aurea’-Leaves golden yellow, fading to green with
time, quite handsome in May-June especially as seen
in the English landscape
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‘Charles Howlett’-Variously shaped and variegated
leaves, yellow to orange streaked bark, slightly
less vigorous than the species
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‘Imperialis’- A form with deeply and finely cut light
green leaves; much more prominently incised than
‘Laciniata’
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‘Laciniata’- Leaves cut and lobed but not to the
degree of ‘Imperialis’
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