What leaf features are common among many members of Myrtales?

Many members of the order Myrtales share several common leaf features, though there is significant variation across families and species.1

• General Morphology: Most members of the order bear leaves that are simple, entire, and typically arranged in an opposite pattern.1
• Arrangement Variations: While opposite leaves are common, leaf arrangement can vary widely. Some species exhibit alternate or whorled leaves, and others may have "scattered" or disjunct-opposite leaves.1
• Stipules: In most families, stipules are present but diminutive, rarely exceeding a few millimeters in length. They are entirely absent in families such as Combretaceae, Onagraceae, and Melastomataceae.1
• Venation and Specialized Cells: Members of Melastomataceae are noted for a characteristic venation pattern featuring several main secondary veins branching from the base of the blade, crossed by transverse tertiary veins. Additionally, leaves of Myrtaceae species often contain large, scattered oil-secreting cells, which appear as translucent spots when held against the light.1