>>2584531California sagebrush (Artemisia californica). It smells amazing and you can make a nice tea out of it. Plus it's nice and soft so it doesn't stab the shit out of you when you're bushwhacking in chaparral.
Very close behind are black sage (Salvia mellifera) and white sage (Salvia apiana). They're prettier and also smell great, but I personally prefer the smell of sagebrush.