Alder
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Alders are trees of the genus Alnus in the birch family Betulaceae. The genus includes about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north te
20120904Alnus glutinosa 01
Female alder catkins after shedding their seeds
Alnus serrulata male catkins
Pollen
Betulaceae
Videos
Betulaceae, the birch family, includes six genera of deciduous nut-bearing trees and shrubs, including the birches, alders, hazels, hornbeams, hazel-hornbeam, and hop-hornbeams, numbering a total of 1
Alder
…Alders are trees of the genus Alnus in the birch family Betulaceae. The genus includes about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with…
Alnus glutinosa
Catkins of the hazel (Corylus avellana)
Corylus avellana foliage and nuts