This email came in from Larry Gooding:
On May 29, 2006, I saw an anglewing butterfly, likely the Satyr Anglewing, Polygonia satyrus, near the first boardwalk in from the SE 37th Ave entrance. It was visiting some low herbs.This is a butterfly I have seen only once in 16 years at my place only a mile to the east, it is nice to know it is right in Portland. Nettles are the host plant for this butterfly.