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Betula sp., Birch(es)

genus Betula Linnaeus (1753)

• Modern species: Eocene - Present (55.8 - 0.0 Ma)

• Classification
• kingdom Plantae, Angiosperms, order Fagales, family Betulaceae

• Distribution
• Paleogene-Neogene: Nagano
• Oligocene: Nagano
• Miocene: Hokkaido, Akita, Miyagi, Niigata, Saitama, Aichi, Gifu, Tottori
• Miocene-Pliocene: Tottori
• Pliocene: Hokkaido
• Pliocene-Pleistocene: Niigata, Mie
• Pleistocene: Hokkaido, Aomori, Yamagata, Nagano, Toyama, Ishikawa, Gunma, Tochigi, Chiba, Aichi, Hyogo, Hiroshima, Yamaguchi
• Holocene: Miyagi, Kyoto
• Investigation in progress: Yamagata

• Subtaxa
• B. adstigmata
• B. costata, Korean birch
• B. dahurica, Dahurian birch
• B. ermanii, Erman's birch
• B. grossa, Japanese cherry birch
• B. hommashinichii
• B. maximowicziana, Monarch birch
• B. miomaximowicziana
• B. nathorsti
• B. nipponica
• B. onbaraensis
• B. platyphylla, Japanese white birch
• B. protoermanii
• B. protoglobispica
• B. sadoensis
• B. schmidtii, Schmidt's birch
• B. sekiensis
• B. uzenensis