en.wikipedia.org
en.wikipedia.org
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:77231517-1
pubmed.ncbi.nlm.nih.gov
powo.science.kew.org
Plants of the World Online
https://powo.science.kew.org › taxon › urn:lsid:ipni.org:names:723748-1
researchgate.net
en.hortipedia.com
en.hortipedia.com
https://en.hortipedia.com › Crataegus_x_macrocarpa
ncbi.nlm.nih.gov
National Center for Biotechnology Information
https://www.ncbi.nlm.nih.gov › pmc › articles › PMC5977086
rhs.org.uk
selinawamucii.com
onlinelibrary.wiley.com
Wiley Online Library
https://onlinelibrary.wiley.com › doi › abs › 10.1002 › cbdv.200790020
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