Crataegus douglasii
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| Crataegus douglasii | |
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| Scientific classification | |
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| Species: | C. douglasii
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| Binomial name | |
| Crataegus douglasii | |
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| Natural range of Crataegus douglasii | |
| Synonyms | |
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C. brockwayae Sarg.[3] | |
References
- ↑ Phipps, J.B.; O’Kennon, R.J.; Lance, R.W. (2003). Hawthorns and medlars. Cambridge, U.K.: Royal Horticultural Society. ISBN 0881925918.
- ↑ TROPICOS entry for series Douglasianae
- ↑ Kruschke, E.P. (1965). "Contributions to the taxonomy of Crataegus". Milwaukee Public Museum Publications in Botany. 3: 11–273.
- ↑ Phipps, J.B. (1995). "The identity of Crataegus columbiana and its relationship to C. piperi (Rosaceae)". Taxon. 44 (3): 405–8. JSTOR 1223414.
Acknowledgements
This article uses material from the Wikipedia article Crataegus douglasii, which is released under the Creative Commons Attribution-Share-Alike License 3.0.