| Betula fruticosa Pall. | |
| Publ. & Syn. | Betula extremiorientalis Kuzen. & V.N. Vassil., Vestn. Dal'nevost. Fil. Akad. Nauk SSSR 21: 162 (1936). Type (LE): Russian Far East: "valle fluvii Jablonovaja fluminis Anadyr influentis", 18. Aug. 1932, leg. L.N. Tjulina. |
| Notes | Czerepanov (1966) about Betula extremiorientalis: "This species ... is very weakly differentiated morphologically and unlikely to merit the rank of species; it is a race of the highly polymorphic B. humilis Schrank ..." (translated in Tolmachev et al. 2000). Yurtsev commented that B. extremiorientalis should be included in B. humilis, perhaps as a race. Shemberg (1992) accepted B. fruticosa Pall. to be the priority name for a widely circumscribed species also including B. humilis and B. extremiorientalis. We have not received any opinions for or against that proposal. |
| Chromosomes | 28 (2x). - Siberia (N), Far East (N). - At least five reports, four for B. extremiorientalis, one for B. fruticosa. |
| Geography | Asian (N/C): SIB RFE. |
| Distribution | N = R E = R YK = r Kh = r CW = r [ key ] |
| Parent taxon | Betula L. |
| PAF ID | 610208 |