This tiny little pea flower is all over the garden and happily wraps itself around anything - chicken wire, lavender, whatever comes in handy. Here the pods are brown and spent but when fresh are bright green and fat with seeds.
I think the answer is not at the leaf nodes ... if you are asking if it roots from a leaf trailing on the ground??? I believe that the pea pods are the means of re-creating themselves - the pea pods here are brown and twisted having dried and emptied their contents. Have I understood your question?
I have added a further picture that shows the back of the leaves. There is no evidence of it rooting where it touches the ground and unlike another vine nearby that definitely crawls along the ground and roots where it touches, this shows no sign of that at all. Infact it only seems to grow vertically, no horizontal growth at all.