Category:Oak leaves in heraldry - Wikimedia Commons

Use this category only for oak leaves alone (one or several oak leaves standing alone without branch and not connected to an acorn). Otherwise use :

• Category:Oak trees in heraldry (for whole trees, either growing from ground or uprooted, sometimes heavily stylised).
• Category:Oak branches in heraldry (for a branch, usually with one or more leaves, often with one or several acorns)
• Category:Acorns in heraldry (for acorns alone, esp. not growing from a branch)