I believe that Passiflora Edulis is your edible passion flower shizo, but as for the other veg, I have no idea other than to look on the packet when you buy it. Most packed supermarket veg. has the variety on the packing.

When you are talking about fruit from perennial plants, such as Passion Fruit, Citrus, Strawberry, etc., the variety name only applies to plants that were propagated asexually. That means started from cuttings, grafted, layered, and the suchlike. Any started from seed are no longer that variety, and may , in fact, be quite different from their "mother".

With annual fruits, such as melons, tomatoes, peppers, etc., you are still not assured of it being the same "variety". Seed producers take extreme measures to ensure that their, say, winter squash don't wind up crossed with the gourds growing down the road, but regular truck farmers don't take such pains. You never know what genetic heritage a tomato from the store has. Even if it was self-pollinated, the genetic variability inherent in hybrids means that the offspring are rarely like their mother.

I should have worked this out really, shouldn't I? Thanks for the enlightenment - much appreciated.

You're welcome, Schizo!

Tugbrethil ...
Your explanations are excellent, and written in a clear way ..easy to understand and they keep my interest, as I read them. ... Thank you :o)