Silver Falls State Park, Marion Co., OR 7/31/06.

One of about three species I saw on this sightseeing trip, Margined Whites were quite common here. I didn't come across any on the rest of the trip.

This species is often lumped into Mustard White (Pieris napi).

Silver Falls State Park, Marion Co., OR 7/31/06.

Silver Falls State Park, Marion Co., OR 7/31/06.

This one narrowly cheated death!