Professional forester and natural resource consultant Steve Nix describes scale-like leaves, needles and typical leaves with a leaf stalk, veins and a midrib in discussing how these leaves play a part in identifying trees. Nix explains that typical leaves usually come from hardwood and deciduous trees, which may form lobed and unlobed leaves when they come from simple tree leaves.Know More
According to Nix, unlobed tree leaves have no projections around the margins of the leaf and may or may not have "teeth." Lobed leaves have major projections that shape the leaf and come as either balanced or unbalanced. Furthermore, with a balanced lobed leaf, the lobes may branch off in either a palmate or pinnate manner. Compound tree leaves have secondary leaves borne on a single stalk attached to a twig and may also branch off in a palmate or pinnate manner.
Nix also explains that trees with needles may either form clusters or bundles of needles or the single needles directly and singly attach to the twig. Evergreen, scale-like leaves often grown on cedars or junipers. Cedar leaves typically have scale-like green sprays that flatten into fan-like foliage. However, junipers usually have spiny, needle-like leaves that have berrylike, bluish, glaucous and bloomy cones on tips of shoots.Learn more about Trees & Bushes
Identify sassafras trees by examining the leaves, bark, tree height, flowers, fruit, scent and geographic location of the trees. You need a field guide for comparison. Sassafras trees are usually easy to identify by taking all of these features into consideration, with identification completed in under 30 minutes.Full Answer >
When the leaves of a citrus tree turn yellow, the tree usually has a mineral deficiency or is diseased. Mineral deficiencies typically are soil related and can be fixed by adjusting the pH. Over watering can lead to diseases which cause yellow leaves and rotting. Excess sunlight also can cause yellowing and curling of citrus leaves.Full Answer >
Willow trees can be differentiated by their leaves, their form, their bark and their catkins. Willows are mostly deciduous trees, which means they lose their leaves in the fall. Male and female flowers are found on different trees, and their leaves are usually long and narrow.Full Answer >
Coniferous trees that are evergreen keep their leaves to preserve water during the winter and through droughts. Many coniferous trees are found where the winters are cold and the ground freezes. Once the ground is frozen, groundwater is no longer available to the tree.Full Answer >