I kill plants, so stick to silk plants in my vivs. I've seen photos from people who do use live plants, so it is done and when done well looks spectacular. As for plants suitable, if I was to do it I'd do a little research on plants in the snake's natural range and see which plants were available here.
Given that I struggle to keep my aquarium plants alive (I persevere with them because they actually help the tank chemistry and serve more than a decorative purpose) I won't be adding any to the snake vivs any time soon.