"Fall colors" - Poison Oak (Toxicodendron diversilobum, Anacardiaceae)
We do have "fall colors" in our part of California! These are brilliant leaves of deciduous native Poison Oak (Toxicodendron diversilobum) in the Anacardiaceae plant family turning red before they fall to the ground. (San Marcos Pass, 15 September 2012)
"Leaves of three, let it be.
Leaves of four, eat some more!"
- Homer Simpson