Both leaf patterns were in the same area. Is it possible that both are Passiflora lutea, even on the same plant? They were mixed in with so much other growth. These were growing in an area that sometimes floods, along a river. Thank you.

The one with the blue-black fruits may be Common Greenbrier (Smilax rotundifolia), which has broad, heart-shaped leaves. The red-fruited species is different. It could be another Smilax species, like S. walteri. But you might also compare with Carolina Moonseed (Cocculus carolinus).

Very interesting. I had never heard of this.

I have! I use them for food. They are a delicious, and healthy vegetable, very similar to asparagus, but even better. It is an asparagoid. That they are so hated just shows how simple the minds are of those who enforce our value judgements! Azaleas, for example, have a pretty flower, but are very poisonous, and even make poison honey by bees that pollinate them! Yet we grow them with love. Smilax is harsh and thorny for sure, but make for great hedge rows, and are a vegetable that many are unfortunate enough not to try! Similar grows just fine in an urban world. For those interested in self sustaining life styles, similar is a must! It is high in fiber and many vitamins and minerals, vitamin c being one of them! Contains all the nutrition of domestic asparagus, but much more of it! Larger, old growth plants are best for their succulent asparagus like shoots. The soft leaves can be cooked like spinach, but the flavor is definitely asparagus. We spend top dollar for food of unknown origin! Stupid considering you know what you have done to your lawn! Roots may also be used as food, or in making saspirilla tea. Saspirilla is a certain variety of similar, but they all are basically the same! One of my favorite plants!!! Shouldn't forget about the arts and crafts that can be made from trained vines. Aside from running headfirst into one, I have nothing but good to say! That many try to eradicate them is abominable to me! They, and many other wild plants, are the bulk of my daily diet, and so much better than domestic produce! Many props to you! Let it grow!!!