First published in J. Arnold Arbor. 1: 65 (1919)
Not accepted by
- Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew. [Cited as Betula × utahensis.]
Useful Plants and Fungi of Colombia
- Jansen, P., Lemmens, R., Oyen, L., Siemonsma, J., Stavast, F. & Van Valkenburg, J. (1991) Plant Resources of South-East Asia. Basic list of species and commodity grouping. Final version. Pudoc, Wageningen.
Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
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