Long size weeds not sure if it's native or non-native to southern California
Scientific name is Encelia California. This is a native perennial has Black-eyed Susan typed flowers. It can grow up to 5 feet. The family of the sun flower is Asterids.It belongs angiosperm.
This plant started growing in one of my pots. I did not plant it, but decided to keep it because I thought it was fascinating. It is now somewhere between 6 and 7 feet tall and still growing!