Family BETULACEAE (Birch Family)
Inception: end of the Cretaceous period, 70 million years ago
Origin: central China
130 species
includes six genera
birches, alders, hazels, hornbeams
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Genus ALNUS
Genus ALNUS
ALDERS
Alnus - Alder
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Betula - Birch
Genus BETULA
Birch
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Carpinus - Hornbeam
Ostrya - Hop-hornbeam
Ostryopsis - Hazel-hornbeam
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Genus Corylus - Hazel
Genus Corylus
Hazels
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