Crataegus douglasii

Crataegus douglasii
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Rosales
Family:	Rosaceae
Genus:	Crataegus
Section:	Douglasia
Series:	Douglasianae; (Loudon) Eggl. ex Rehder
Species:	C. douglasii
Binomial name
	Crataegus douglasii; Lindl.
	Natural range of Crataegus douglasii
Synonyms
	C. brockwayae Sarg.; C. columbiana Howell

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.

This article uses material from the Wikipedia article Crataegus douglasii, which is released under the Creative Commons Attribution-Share-Alike License 3.0.