<i>Carya ovata</i> (P. Mill.) K. Koch - shagbark hickory leaves and bark
Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln, NE.
<a rel="nofollow" class="external free" href="https://plants.usda.gov/java/largeImage?imageID=caov2_001_avp.tif">http://plants.usda.gov/java/largeImage?imageID=caov2_001_avp.tif</a>