You should try the "Name That Plant" forum here on GardenWeb. The folks over there are able to identify just about everything, photo or not. Joe Here is a link that might be useful: Name That Plant! forum

I cannot see the pictures, but if your tri-lobed one resembles a duck foot, and the flowers are small and yellow to yellow green, it is probably lutea. The fruit is small, purple, and berry like. Grows easily from seed. ~Tiger

Tomato Worm, You have at least 3 species of wild grape in OK; Vitis riparia (riverbank grape), Vitis rotundifolia (muscadine grape) and Vitis cinerea (gray-bark grape). I'm only familar with the riverbank variety, but I can tell you that it's pretty much what you described. The fruit are very bitter/sour, but not poisonous. They are often used to make preserves although I became accustomed to the taste of the unprepared berries as a kid, (kind of like I did with crab apples ;) I've attached a link to the gray-bark grape as a staring point... Here is a link that might be useful: Gray-bark Grape

so happy to find this thread on wild sea! we are close to choosing this slab for our countertops. the length between the blue tape is what were thinking for our longest span (103") with the sink cut out where the inner blue tape is. then we have 2 smaller sections measuring 34x25 and 45x34. we are thinking to have the 2 smaller ones cut with as much of the bottom green as possible running horizontal, as it feels like mountains rising out of the green ocean. the 45-34 will be a small eating peninsula and the smaller for a small area next to the stove. any input/ideas? thanks!!