Crataegus holmesiana (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Crataegus holmesiana" in English language version.

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Phipps, J.B.; O’Kennon, R.J.; Lance, R.W. (2003). Hawthorns and medlars. Cambridge, U.K.: Royal Horticultural Society. ISBN 0881925918.

Botanic Gardens Conservation International (BGCI) & IUCN SSC Global Tree Specialist Group (2018). "Crataegus holmesiana". IUCN Red List of Threatened Species. 2018: e.T135958043A135958045. doi:10.2305/IUCN.UK.2018-2.RLTS.T135958043A135958045.en. Retrieved 2 June 2024.
Phipps, J.B.; Cafferty, S.; Macklin, J.A. (2003). "Lectotypification of Crataegus coccinea L. and its conspecificity with C. pedicellata Sarg. (Rosaceae)". Taxon. 52 (2): 337–8. doi:10.2307/3647408. JSTOR 3647408.

Botanic Gardens Conservation International (BGCI) & IUCN SSC Global Tree Specialist Group (2018). "Crataegus holmesiana". IUCN Red List of Threatened Species. 2018: e.T135958043A135958045. doi:10.2305/IUCN.UK.2018-2.RLTS.T135958043A135958045.en. Retrieved 2 June 2024.

Phipps, J.B.; Cafferty, S.; Macklin, J.A. (2003). "Lectotypification of Crataegus coccinea L. and its conspecificity with C. pedicellata Sarg. (Rosaceae)". Taxon. 52 (2): 337–8. doi:10.2307/3647408. JSTOR 3647408.