Chinese Evergreen Green Papaya, aka Aglaonema Green Papaya, features striking lime green and dark green-hued leaves, with a contrasting pink vein down the centre of each leaf. The Chinese Evergreen family is among the top houseplants that purify the air and is also on Nasa's list of air-purifying plants. They have been found to be excellent at removing benzene and formaldehyde from the air inside your home or office! Not only that, but they are a rather hardy tropical, where they can handle most light and watering conditions.