Just because you can eat something doesn't mean it will keep you alive. Dandelion greens, for example, definitely don't provide enough calories to make up for w

Just because you can eat something doesn't mean it will keep you alive. Dandelion greens, for example, definitely don't provide enough calories to make up for what you spend gathering them. I'm not sure they have enough to make up for just the effort of chewing and digesting them. Everything you've mentioned there is just greens except for the plantains and onions, which will certainly be stripped bare in days. The rest might liven up a salad, but it definitely won't give you the protein and calories to stave off starvation.