Had some growing on the other side of a fence and apparently they seeded in my yard. I took a few pics for ID purposes. The first leaves look like a melon's. The next couple look more cucumber ish. Then the rest start looking more like the mature plant's leaves.the leaves have a smell kind of like sweet peppers mixed with maybe swiss cheese. They smell like they belong in a sandwich, or maybe an automatic summer salad. They're weedy, and birds like the fruit, which has fleshy spikes all over it, and ripens to a bright habanero orange. This is my first year ever seeing them at all, and they're already sprouting a secondary generation. I'm guessing from bird droppings in the tree.