[Illustration: TYPES OF TWIG BRANCHING]
Alternate
Whorled
Opposite
[Illustration: LEAF TYPES]
Simple
Compound
Doubly Compound
Opposite Leaves
Alternate Leaves
Awl-Shaped Needles
Pine Needles
Scale-like Needles
[Illustration: PARTS OF LEAF]
Lamina or blade
Base
Stem
Apex
Leaf margin
Primary vein
Secondary or lateral veins
Petiole (Sessile leaves have no petiole but are attached directly to
the stem)