Crataegus pruinosa (H.L. Wendland) K. Koch var. pruinosa . Frosted Hawthorn. Phen: Apr-May; Sep-Oct. Hab: Upland hardwood forests, pastures, rock outcrops, mountain summits and balds, sometimes colonial or locally abundant. Dist: ME to WI, IA, s. to NC, TN, AR.
Origin/Endemic status: Native
Syn: = C, FNA9, Pa, S, W; > Crataegus arcana – K1, S2; < Crataegus flabellata – RAB; > Crataegus gattingeri – F; > Crataegus gattingeri var. gattingeri – G; > Crataegus gattingeri var. rigida – G; > Crataegus georgiana – S2; < Crataegus pruinosa – Ar, GrPl; >< Crataegus pruinosa – K1, Tn; > Crataegus pruinosa var. delawarensis – F, G; > Crataegus pruinosa var. gattingeri – Lance (2014); > Crataegus pruinosa var. pruinosa – F, G, Lance (2014); > Crataegus rugosa – F, G; > Crataegus rustica – S2; > Crataegus vicinalis – S2
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