In Southern California, I was pulling out some roots and grasses and weeds in our backyard, and I noticed something weird. It appeared like there was a grape-sized bulb of something connected to one of the roots below the top layer of dirt. I didn't puncture it or anything, but do you have any idea what this could be?
It reminded me of two things: an air sack on kelp and a potato.
Edit: I took some more photos, and I tried to break it apart. I was able to break it in half with one hand, easier than a potato but harder than a grape. It was a little juicy inside. I took more photos too.
Edit number two: We have dandelions. Does this seem like it could be a potato dandelion?
Edit #3: So we have a lot of Dandelions and I thought these roots appeared to be connected to dandelion plants, so at first I thought they were potato dandelions. However, we I pulled out a different plant nearby, and it had very similar looking tubers connected to the roots. It was a small plant, but here's the picture, and a picture of a larger plant that I think is the same species as this one, but mixed with a bush. Can anyone positively identify it?