Rod: Alnus, Čeľaď: Betulaceae (Betulaceae), Skupina: Krytosemenné dreviny

(Alnus)

-> Family: Betulaceae -> Group: Angiosperms

trees and shrubs
leaves are simple, alternate
buds are mostly petiolate, usually with two covering scales
they are monoecious woody plants, flowers of different sexes, ♂ are also ♀ established in autumn
the fruit is an achene with a narrow wing

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