Chaya

Cnidoscolus aconitifolius, commonly known as chaya, tree spinach, or spinach tree, is a large, fast-growing and leafy perennial shrub that is believed to have originated in the Yucatán Peninsula of southeastern México. The specific epithet, aconitifolius, refers to the plant’s "Aconitum-like leaves"—coincidentally, another well-known dangerous, even deadly, genus of plants. As with most euphorbias, the entire plant contains a caustic, viscous and potentially dangerous white sap which flows readily when any part of the plant is broken, cut or damaged. The plant can grow to be 6 metres tall, but usually is pruned to approximately 2 metres (6.6 ft) for easier leaf harvest. It is a popular leaf vegetable in some regional Mexican and other Central American cuisines, used similarly to cooked Swiss chard or spinach. White, typically unremarkable flowers are borne of a terminal panicle held high above the foliage, superficially resembling the small flowering bracts of similar plants like poinsettia or crown-of-thorns.

Source: Wikipedia