Identify lawn v8ne/weed
I am wondering if you have creeping Bellflower, Campanula rapunculoides . Creeping bellflower has both a thick, fleshy root that’s an inch or even several inches deep in the soil, and it also has a lot of thread-like little roots that grow horizontally just below the soil. Have you seen it flower? Do the stems have rough or stiff hairs? You can google this plant and see if it is a match. Let me know if you don't think it is and we will keep working.