Black cohosh in flower
Not a lot of pollinator interest in this yet, usually there isn't until the inflorescences have more flowers open.
As of Oct. 24 2007, this photo is being improperly used at the howstuffworks website, in violation of the non-commercial CC license. I have contacted the site to request removal.
Update 2: A contact from HowStuffWorks claims the photo was provided to them by a company called Publications International, Ltd. - a company I did not give permission to use any of my photos!
Update 3: HowStuffWorks has removed the photo from their servers.