This photo looks very much like my mystery volunteer. This was the best picture. Compare it to the post I made earlier of the stem and seedpods. Click on the small image on the following URL and you'll get a nice, big picture:
The seedpods at the base of each flower are identical to those I kept -- This is exciting to me! I believe the mystery may be solved. I don't know what cultivar my ipomopsis is, or even if she's straight species of some type, but I'm sure that's what she must be!