Leaf Shape: Margins, Venation and Position - Lizzie Harper
Touch-Me-Nots: Poison Ivy, Poison Oak, and Poison Sumac - Alabama Cooperative Extension System
Observation of Palmately Compound Leaves
Leaf Morphology
Margins of the Leaf
How to Identify Different Types of Leaves
Sessile leaves and Petiolate leaves, Bifacial leaves
Parts of the Leaf, Simple and Compound Leaves : Three Part Cards
Plant identification course (leaf margins)