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Alnus incana.jpg
Speckled Alder Alnus incana subsp. rugosa
Scientific classification
Kingdom: Plantae
Unranked: Angiosperms
Unranked: Eudicots
Unranked: Rosids
Order: Fagales
Family: Betulaceae
Genus: Alnus
Subgenus: Alnus
Species: A. incana
Binomial name
Alnus incana
(L.) Moench[1]

Alnus incana (Grey Alder or Speckled Alder) is a species of alder with a wide range across the cooler parts of the Northern Hemisphere.

It is a small to medium size tree 15-20 m tall with smooth grey bark even in old age, its life span being a maximum of 60-100 years. The leaves are matt green, ovoid, 5-11 cm long and 4-8 cm broad. The flowers are catkins, appearing early in spring before the leaves emerge, the male catkins pendulous and 5-10 cm long, the female catkins 1.5 cm long and one cm broad when mature in late autumn. The seeds are small, 1-2 mm long, and light brown with a narrow encircling wing. The Grey Alder has a shallow root system, and is marked not only by vigorous production of stump suckers, but also by root suckers, especially in the northern parts of its range. The wood resembles that of the black alder, but is somewhat paler and of little value.

SynonymEdit

Alnus tenuifolia

Common NameEdit

Alder

ReferencesEdit

  1. Flora of North America. 2009

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