Aglaonema costatum, called the spotted evergreen, is a species of flowering plant in the genus Aglaonema, native to Bangladesh, Thailand, Peninsular Malaysia, Laos, Cambodia and Vietnam. A. costatum typically reaches about 60 cm tall and 30-45 cm wide. Its leaves are typically about 20 centimeters long, ovately shaped, with entire margins. They are green, with a white stripe along the midrib and a number of irregularly shaped white spots. In the summer, it produces white spathe-and-spadix flowers, about 2-3.5 centimeters long.