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Placed in Ulmaceae in Michigan Flora.

1. Fruiting pedicels ca. 10โ€“20 mm long, at least 1.5 times as long as the subtending petiole; ripe drupes dark purple, coarsely and strongly wrinkled when dry; leaves mostly with acuminate apex and margins toothed nearly to the base.

C. occidentalis

1. Fruiting pedicels ca. 3โ€“10 (โ€“13) mm long, shorter than to slightly exceeding the subtending petiole; ripe drupes orange-brown, remaining plump and smooth when dry; leaves mostly broadly acute to short-acuminate, the margins often entire or nearly so on basal third.

C. tenuifolia

All species found in Celtis

Celtis occidentalisHACKBERRY 
Celtis tenuifoliaDWARF HACKBERRY 


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 25, 2022. https://michiganflora.net/genus.aspx?id=Celtis.