Crataegus margaretiae Ashe var. angustifolia E.J. Palmer. Narrowleaf Margaret's Hawthorn. Phen: Apr-May; Sep-Oct. Hab: Woodland margins, brush. Dist: S. MI and IN.
Origin/Endemic status: Native
Taxonomy Comments: A sporadic form of the species distinguished primarily by its near-elliptic leaves and perhaps deserving only a forma designation.
Synonymy: = Crataegus margarettae Ashe var. angustifolia E.J.Palmer – F, FNA9, G, Va, orthographic variant; = Crataegus margarettiae Ashe var. angustifolia E.J.Palmer, orthographic variant; < Crataegus chrysocarpa Ashe – C, Pa; > Crataegus chrysocarpa Ashe – K1; < Crataegus margaretta – S13, orthographic variant; ? Crataegus margarettiae Ashe – K1, orthographic variant
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