Waterleaf is a vegetable that's known by many names. Its names include Ceylon spinach, Florida spinach, Surinam purslane, cariru, and more. Even its scientific name is up for debate. Both Talinum fruticosum and Talinum triangulare are used. Regardless of what it's called, it's crunchy, tangy, and nutritious.Waterleaf is a good source of vitamin A. Research indicates that eating a diet rich in vitamin C reduces the risk of developing Alzheimer's disease and slows age-related cognitive decline. Waterleaf is an excellent source of vitamin C, with about 31 mg for every 100 grams of vegetable matter.