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Crataegus columbiana
Also called River Hawthorn, Columbia Hawthorn, Douglas Hawthorn, Douglas' Hawthorn, Black Fruited Hawthorn
The name Crataegus columbiana is a source of considerable confusion. The species named by Thomas J. Howell is now considered to be the same as C. douglasii, named earlier, and the earlier name should be used instead. However, some varieties of C. columbiana have also been named that are not related to C. douglasii. C. columbiana has been used by some authors for Crataegus piperi Britton, which is now known as C. chrysocarpa var. piperi.
For C. columbiana var. chrysocarpa (Ashe) Dorn see C. chrysocarpa Ashe.
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Text excerpted from the Wikipedia article Crataegus columbiana by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
