What's the difference between Green Fascism and Green Communism? Which one is better for America?

The true Greens are typically neither, although they do tend to be socialist, but still far more socially libertarian than either of the "2" parties in control of the power currently. They may not actually be the best choice bear in mind, as there are many other better independent party choices, but still could do much for the country in many respects. Just breaking the current cycle of divide and conquer politics, even really bad leaders could do some good, when it comes down to it.