*Crataegus monogyna Jacquin. English Hawthorn, One-seeded Hawthorn. Hab: Mesic soil. Dist: Native of Europe. Naturalized in northeastern US south to Fairfax County, VA.

ID notes: The single style and pyrene is a significant identifying trait; leaf lobes and serrations tend to be acute, and main lateral veins lead to sinuses as well as lobe tips.

Origin/Endemic status: Europe

Synonymy: = C, F, G, K1, K3, Mi, Pa, Lance (2014); > Crataegus monogyna Jacq. var. monogyna – FNA9, NY

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