The epidermis may or may not support leaf hairs, which can also be an important botanical identifier. All tree leaves exhibit margins—the blade-like edges of the leaves—that are either ...

Willows (Salix ssp) can be identified by their long, narrow leaves, which have small toothed leaf margins. The leaf petioles—the stalks that attach the leaves to their stems—are usually short ...

Too much sun exposure can cause both indoor and outdoor plants to scorch on the leaf margins. A dry home can also cause this problem with houseplants that require high humidity. Wilting leaves are ...

They have lacy wings dotted with black and brown patches or bands. The eggs are 0.02 in long and usually laid on the midrib or leaf margins of young leaves; they are covered with a dark brown adhesive ...

Tree-of-heaven leaflets have what we call “glandular teeth” (See Figure 2) at the base of an otherwise nearly smooth or entire leaf margin. Tree-of-heaven will have a single terminal leaflet, while ...