Mapping is not yet possible given the need for review of all Celtis colls. This taxon is known mostly from the southern Piedmont, Cumberland Plateau and adjacent Interior Low Plateaus (W, Y). Colls. from ANDE, BULL, FAYE, HART, JESS, MADI, MARS, MERC, OHIO, SHEL, TAYL and elsewhere have been tentatively assigned here. In Ky., most of these plants appear transitional from laevigata to occidentalis; hypothetically, pollen of laevigata may have blown north to produce occasional hybrids with occidentalis. However, W has treated smalli as a species, distinguished by "Leaves subtending fruits with margins with 2-15 teeth 1-2 mm long on each side" versus "with margins entire or with 1-2 teeth 0.5-1 mm long on one side only". Var. smallii also tends to have relatively broad leaf shape, with more abruptly tapering apex. But juvenile plants or vigorous sprouts of typical laevigata can also have leaves more strongly toothed, and often much larger or broader than those on mature fertile shoots. Compared to occidentalis, smallii generally has smaller leaves on fertile shoots; they tend to be deeper bluish-green on both surfaces and more glossy above. More detailed analysis is needed; see also notes under var. laevigata.