Betula × utahensis Britton

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Credits

Article from New Trees, Ross Bayton & John Grimshaw

Recommended citation
'Betula × utahensis' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/betula/betula-x-utahensis/). Accessed 2020-10-27.

Genus

Glossary

hybrid
Plant originating from the cross-fertilisation of genetically distinct individuals (e.g. two species or two subspecies).

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Credits

Article from New Trees, Ross Bayton & John Grimshaw

Recommended citation
'Betula × utahensis' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/betula/betula-x-utahensis/). Accessed 2020-10-27.

This taxon is a natural hybrid of B. occidentalis and B. papyrifera. Its morphology is intermediate between the parent taxa. The branchlets are greenish brown and very resinous, and the ovate leaves are glabrous with blunt serrations. The pistillate catkins are very thick and slightly pubescent. Britton 1904, Furlow 1997. Distribution CANADA: Alberta, British Columbia, Yukon Territory; USA: Utah. Habitat Montane streambanks and lakeshores. USDA Hardiness Zone 1–2. Conservation status Not evaluated.

This is another variable hybrid with no advantages over its parents. It is grown in major collections, including a large specimen at Edinburgh and propagations from this at Wakehurst Place. It has also been introduced as seeds from Montana by Kenneth Ashburner, although the identity of these trees is somewhat in doubt, as in the wild they were very large, which seems improbable for a hybrid involving B. occidentalis (H. McAllister, pers. comm. 2007). Trees in cultivation at Stone Lane Gardens have striking black bark.

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