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CCDB → Angiosperms → Betulaceae → Betula → Betula extremiorientalis Kuzen. & V. N. Vassil.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Betula extremiorientalis Kuzen. & V. N. Vassil. | Betula fruticosa Pall. | 28 | IPCN online | ZHUKOVA, P. G. 1980. Chromosome numbers of some Southern Chukotka plant species. Bot. Zhurn. 65 (1): 51–59. | ||
| ! | Betula extremiorientalis Kuzen. & V. N. Vassil. | Betula fruticosa Pall. | 28 | IPCN online | ZHUKOVA, P. G. & V. V. Petrovsky. 1980. Chromosome numbers and taxonomy of some species of the Anyui Mts. Bot. Zhurn. 65 (5): 651–659. | ||
| ! | Betula extremiorientalis Kuzen. & V. N. Vassil. | Betula fruticosa Pall. | 28 | IPCN online | ZHUKOVA, P. G. & V. V. Petrovsky. 1975. Chromosome numbers of some Western Chukolka plant species. Bot. Žhurn. (Moscow & Leningrad) 60(3): 395–401. |