Crataegus coccinea Linnaeus. Scarlet Hawthorn. Phen: May; Oct. Hab: Deciduous forest understories, pastures, upland thickets. Dist: ME w. to MN, s. to NC, OH. From its mostly northern range, this species is uncommon and sporadic in its southerly range extension on the Appalachian Plateau.

ID notes: The combination of large, pubescent leaves (9-12 cm long) on terminal shoots, evenly toothed calyx lobes and 5-10 stamens per flower are distinctive. C. coccinea may attain treelike proportions, to 10 m tall, but some genotypes are shrubby.

Origin/Endemic status: Native

Synonymy: = C, Mi, NE, RAB, Lance (2014); > Crataegus coccinea L. – Pa; > Crataegus coccinea L. – FNA9, NY; > Crataegus coccinea L. var. pringlei (Sarg.) J.A.Macklin & J.B.Phipps – FNA9, NY; > Crataegus pedicellata Sarg. – Il, K1, Tat, W; > Crataegus pennsylvanica Ashe – F, G, Pa

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Heliophily ?: 6