Features that differentiate hickory leaves from the leaves of other types of trees are:  Several long, narrow leaves that grow from each stalk. Leaf size. Depending on the species, a hickory leaflet may be anywhere between 2 inches (5.08 cm) to 8 inches (20.32 cm) long. Serrated edges. Some may have sharply-pointed teeth, others more rounded serrations. Hickory leaves grow from a distinctive stalk, or rachis. Hickory rachis features include:  Anywhere from 5 to 17 leaves. Leaves that grow in directly oppositional pairs, perpendicular to the stalk, with a single leaf protruding straight from the end. Visibly larger leaves near the end of the rachis. Hickory trees have bark that forms ridges in a vertical pattern. These ridges may be shallow or deep, far apart or close together, but always vertical. Additionally, some hickory bark becomes raised at the plate edges as the tree matures, and eventually flakes off, from top to bottom. Hickory nuts have a woody outer shell, or husk. This husk starts out green but will harden to dark to light brown with a seam around the middle. The thickness of the husk can vary depending on species, but the nut inside will be white or tan and roughly the size of a gumball. The pith of a tree is the central column of its branches. All hickory tress have a solid, tan, 5-sided pith. Look at the end of the branch where you cut it from the tree. If you see a 5-sided or star-shaped tan center, the branch meets two of a hickory's requirements. To see if the pith is solid, cut off a small living branch and slice it in half along its length. If the branch is solid with no midsection that looks like a sponge or a honeycomb, the pith is solid.
انظر للأوراق. انظر لشكل الأعواد. انظر للحاء. انظر للجوز. انظر للنخاع.