Crataegus pruinosa (H.L. Wendland) K. Koch var. dissona (Sargent) Eggleston. Northern Frosted Hawthorn. Phen: Apr-May; Sep-Oct. Hab: Upland hardwood forests, brush, pastures, rock outcrops. Dist: PA to NC, w. to MO, se. OK.

Origin/Endemic status: Native

Taxonomy Comments: The presence of 10 stamens per flower is distinctive among the throng of 20-stamened Pruinosae.

Synonymy: = F, FNA9, Va; = Crataegus dissona – NE; > Crataegus brachypoda Sarg. – F, G; > Crataegus disjuncta Sarg. – K1, K3, S13; > Crataegus dissona – K3; < Crataegus flabellata (Bosc ex Spach) K.Koch – RAB; < Crataegus pruinosa (H.L.Wendl.) K.Koch – GrPl, Pa, Tn; > Crataegus pruinosa (H.L.Wendl.) K.Koch var. pruinosa – F, G; > Crataegus rigida Sarg. – K1, S13

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