👉 The term "elapinae" is a genus of flowering plants in the family Apocynaceae, which is native to the Americas. Elapinae are characterized by their large leaves, which are arranged in three pairs on opposite sides of the plant stem. The leaves are usually long and narrow, with a pointed tip at the base, and have a distinctive white or yellow undersides. Elapinae plants can grow up to 10 feet tall and produce flowers that