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.

ID notes: The presence of a waxy bloom on the mature fruit (pruinose) is not always evident. Foliage and floral parts are usually entirely glabrous on plants in our region.

Origin/Endemic status: Native

Synonymy ⓘ: = C, FNA9, Pa, S, W; > Crataegus arcana Beadle – K1, S13; < Crataegus flabellata (Bosc ex Spach) K.Koch – RAB; > Crataegus gattingeri Ashe – F; > Crataegus gattingeri Ashe var. gattingeri – G; > Crataegus gattingeri Ashe var. rigida E.J.Palmer – G; > Crataegus georgiana Sarg. – S13; < Crataegus pruinosa (H.L.Wendl.) K.Koch – Ar, GrPl, Il, NY, Tat; >< Crataegus pruinosa (H.L.Wendl.) K.Koch – K1, Tn; > Crataegus pruinosa (H.L.Wendl.) K.Koch var. delawarensis (Sarg.) E.J.Palmer – F, G; > Crataegus pruinosa (H.L.Wendl.) K.Koch var. gattingeri (Ashe) Lance – Lance (2014); > Crataegus pruinosa (H.L.Wendl.) K.Koch var. pruinosa – F, G, Lance (2014); > Crataegus rugosa – F, G; > Crataegus rustica Beadle – S13; > Crataegus vicinalis Beadle – S13

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Heliophily ⓘ: 7