June 24,   East Wareham
This would be a new county record for Plymouth Co. So far this exotic annual/biennial originating from Eurasia has been found in Suffolk Co. and on the Cape and Nantucket. This photo was posted in June 2012 at our Q/A page by Liz H. ("In my yard. West-facing edge of forest"). It remained without ID until 2018. Photo credit Liz H.