That's it in the picture, with the cap (like the EGR solenoid). The canister purge valve, now called a vapor management valve, has a green cap that screws onto the evap service port. Check to make sure the green cap is on tight, or you will throw a gross leak code like P0455.
The box under the tank in back is the purge canister itself. The vent for that canister is a little hole behind the fuel door hinge, next to the gas cap. Make sure a spider hasn't built a nest in that vent hole, or that will mess up the evap system, too. Don't laugh; it happens a lot.
