''Betula globispica'', is a species of

birch A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech- oak family Fagaceae. The genus ''Betula'' contains 3 ...

native to Japan, where it grows naturally in the mountains of central Japan. Though rare in nature, saplings were planted at the Royal Botanic Gardens, Kew in 1957.

References

Flora of Japan globispica {{fagales-stub