Is this Ibervillea lindheimerii?

I collected a bright scarlet fruit about the size of a large hen's egg a couple of years ago where it was prevalent in a fence row in Refugio Co. I assumed it was a Passiflora because the pale beige, flattened oval seed was reticulated. I cleaned some of the seed by eating the flesh and it tasted quite a bit like a maypop! Duh... The young plants were kept in 4" pots most of the year and soon a caudex was visible in the pots. I didn't get around to potting any up until this spring and they really took off. They began blooming today and if this is a passion flower, it's a really confused one! The flowers are about the size of a nickel and they are in clusters of up to 6. The closest I could come in my search is Ibervillea lindheimerii. Can anyone confirm that this is indeed the plant that I have?
Thanks,
Rosemary

That does look like what I think might be a Ibervillea lindheimeri flower. Look at this site for the leaves and such and see if those look like what you have. BTW, I really like that native plant with its reddish-orange fruits!
http://www.sbs.utexas.edu/mbierner/bio406d/images/pics/cuc/ibervillea_lindheimeri.htm

Thanks, Linda! I'm convinced that is what I have from the site you provided even though my stamens differ by having only three showing.

I was thoroughly convinced it was a passiflora but as they started growing bigger, I questioned why there were no larvae chomping on the leaves. (my Passiflora foetidas and caeruleas get decimated so that I can barely get them to selling size! - I sell at various market days and really want my customers to know what they are getting.) The bright scarlet fruit I collected is much larger than what is described for Ibervillea and there were no immature fruit to see the distinctive squash stripes, but I guess I can just attribute the large size to varience and culture. And I guess I'm really lucky the plant wasn't poisonous, huh? I mean, it could have been some relative of the boxwood or oleander that I ATE. Duh....

Thanks,
Rosemary