Many plants labeled coccinea are in fact, vitifolia. If this is the case with you, consider yourself lucky, as it is not as temperamnetal. Cross pollination witha related species ( like another vitifolia or coccinea) worls best. Let the fruit ripen for a month after falling before eating.

The easiest way to tell the difference between vitifolia and coccinea are by the leaves. Vitifolia with have tri-lobed leaves that resemble grape leaves, whereas coccinea leaves are generally single-lobed. Coccinea are temperamental in regards to flowering (I've got one and have yet to have it flower) but they and vitifolia will cross-pollinate each other easily and produce viable seed (they're closely related).

Yes I believe mine is a vitofolia. It has the grape looking tri-lobed leaves, but some of the leaves near the base are single-lobed. This vine has quite a few buds on it. Anyway, guess I'll have to try and pollinate it with what I have for now. Thanks.

My vitifolia has some unlobed leaves as well. It's not uncommon. It's one of my favorite passies, blooms beautifully and can take a fair amount of abuse without suffering. It also has pretty striped fruit.
Karyn

very closely related species...but eh "juvenile" leaves on vitifolia do, indeed, resemble coccinea. They are more easily distingushed once the plant is a few months old. Still, for subtropical climates, grwon outdoors, vitifolia is a hands down winner over coccinea.