Difference between revisions of "Grey Alder"

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{{SPlantbox
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|familia=Betulaceae
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|genus=Alnus
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|species=incana
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|common_name=Gray alder
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|name_ref=Flora - A Gardener's Encyclopedia
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|habit=tree
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|habit_ref=Flora - A Gardener's Encyclopedia
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|Max ht box=70
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|Max ht metric=ft
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|height_ref=Flora - A Gardener's Encyclopedia
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|Max wd box=30
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|Max wd metric=ft
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|width_ref=Flora - A Gardener's Encyclopedia
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|lifespan=perennial
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|life_ref=Flora - A Gardener's Encyclopedia
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|exposure=sun
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|sun_ref=Flora - A Gardener's Encyclopedia
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|Temp Metric=°F
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|min_zone=3
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|usda_ref=Flora - A Gardener's Encyclopedia
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|max_zone=9
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|image=Upload.png
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|image_width=240
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}}
 
__NOTOC__{{Plantbox
 
__NOTOC__{{Plantbox
 
| name = ''Alnus incana''
 
| name = ''Alnus incana''

Revision as of 12:39, 1 December 2010


Upload.png


Plant Characteristics
Habit   tree

Height: 70 ft"ft" can not be assigned to a declared number type with value 70.
Width: 30 ft"ft" can not be assigned to a declared number type with value 30.
Lifespan: perennial
Cultivation
Exposure: sun
USDA Zones: 3 to 9
Scientific Names

Betulaceae >

Alnus >

incana >



Speckled Alder Alnus incana subsp. rugosa


Plant Characteristics
Origin: ?
Cultivation
Exposure: ?"?" is not in the list (sun, part-sun, shade, unknown) of allowed values for the "Exposure" property.
Water: ?"?" is not in the list (wet, moist, moderate, dry, less when dormant) of allowed values for the "Water" property.
Scientific Names

Betulaceae >

Alnus >

incana >



Read about Grey Alder in the Standard Cyclopedia of Horticulture 

Alnus incana, Willd. Shrub or tree, to 60 ft. : branches pubescent: lvs. oval or oblong-ovate, acute, 1 1/4-4 in. long, doubly serrate, pubescent or nearly glabrous beneath: cones 4-8; mostly sessile, 1/2 in. long. Northern hemisphere, in different varieties. CH


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


Cultivation

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Propagation

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Pests and diseases

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Species

There are four to six subspecies, some treated as separate species by some authorswp:

  • Alnus incana subsp. incana (Grey Alder). Northern Europe and northwestern Asia, and central and southern Europe in mountains, mainly in the regions of the Alps, Carpathians and the Caucasus.
  • Alnus incana subsp. hirsuta (A. hirsuta; Manchurian Alder). Northeastern Asia, and central Asia in mountains.
  • Alnus incana subsp. kolaensis. Subarctic northeast Europe.
  • Alnus incana subsp. oblongifolia (A. oblongifolia; Arizona Alder). Southwestern North America.
  • Alnus incana subsp. rugosa (A. rugosa; Speckled Alder). Northeastern North America.
  • Alnus incana subsp. tenuifolia (A. tenuifolia; Thinleaf Alder or Mountain Alder). Northwestern North America.

From SCHCH: Var. glauca, Ait. (A. glauca, Michx.). Shrub, to 12 ft.: lvs. often nearly glabrous beneath. N. Amer., Eu. Em. 251.

Var. vulgaris, Spach. Tree, to 50 ft.: lvs. usually densely pubescent beneath: cones 1 in. long. Eu., Asia.

Var. pinnatifida, Spach (var. laciniata, Hort.). Lvs. pinnately lobed or cleft, with dentate lobes.

Gallery

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References

External links