Ube Yam or Dioscorea alata is a type of vine that produces both aerial tubers and underground tubers. In the Philippines alone, there are several varieties of ube, depending on location. These ube are in different shades of purple and white. These are not to be confused with true yams, which are a species of morning glory (Ipomea). Ube grows in areas with temperatures 60-95 F (15-35°C) and annual rainfall of less than 1,000 mm distributed over 6 to 7 months. Ube is adapted to partially or fully shaded conditions, and it grows tubers best during shorter days, or less than 12-hours of daylight.
You are purchasing 1 tuber. First photo is representative of what you will recieve, but is not the exact one/ones you will recieve.