You selected Crataegus pyrifolia J.Gordon, T.Dermer & R.Edmonds. This is a synonym for:

Accepted scientific name:
Crataegus calpodendron (Ehrh.) Medik. (accepted name) 1 literature reference for Crataegus calpodendron (Ehrh.) Medik.
Synonyms: -
Infraspecific taxon: Crataegus calpodendron var. calpodendron
Crataegus calpodendron var. gigantea Kruschke
Crataegus calpodendron var. globosa (Sarg.) E.J.Palmer
Crataegus calpodendron var. hispidula (Sarg.) E.J.Palmer
Crataegus calpodendron var. microcarpa (Chapm.) E.J.Palmer
Crataegus calpodendron var. mollicula (Sarg.) E.J.Palmer
Crataegus calpodendron var. obesa (Ashe) E.J.Palmer
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Rosales
Family Rosaceae
Genus Crataegus
Distribution: -
Additional data: -
Source database: IOPI-GPC, 10.0, Aug 2007
Latest taxonomic scrutiny: R. Pankhurst, 2009
Online resource: -
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:2b74849c-60a7-102d-be47-00304854f810:ac2010