Here are some pictures of Passiflora antioquiensis. I have not bloomed the plant myself, but I have a ton of seedlings right now. I will post some sort of giveaway for a couple seedlings when they get a little larger.
This is a photo from Bill Harberts in Orange County, CA, who is the source of my seeds. I don't know if it's clear, but the flowers are large (5 inches) and the peduncles can be up to 2 feet long. This one really has a reputation as being a cool grower:
Bill got his seeds from Dave Hermeyer in San Francisco. Here's Dave's plant on Saturday--it has been the source of most P. antioquiensis available in the U.S., and it will soon be a source for many more. There were a large number of fruits (I counted either 40 or 60, each with a couple hundred seeds), many buds, but no flowers open over the weekend.
There's a bud, for example, next to the third green fruit, looking from the middle right of the photo. The peduncle is long and the bud is small.
And here's Dave's plant (same plant) in bloom several years ago (definitely worth clicking on!):
He has several more photos of his plant on Dave's Garden.
The fruit is considered by many to be among the tastiest Passiflora fruits.