Crataegus douglasii

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Crataegus douglasii
Crataegus douglasii.jpg
Scientific classification
Kingdom:
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C. douglasii
Binomial name
Crataegus douglasii
Crataegus douglasii range map 2.png
Natural range of Crataegus douglasii
Synonyms

C. brockwayae Sarg.[3]
C. columbiana Howell[4]

References

  1. Phipps, J.B.; O’Kennon, R.J.; Lance, R.W. (2003). Hawthorns and medlars. Cambridge, U.K.: Royal Horticultural Society. ISBN 0881925918.
  2. TROPICOS entry for series Douglasianae
  3. Kruschke, E.P. (1965). "Contributions to the taxonomy of Crataegus". Milwaukee Public Museum Publications in Botany. 3: 11–273.
  4. 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.