 "Sarracenia minor" and "S. psittacina" are the only species in the genus to employ domed pitchers with translucent white patches that allow light to enter.It has been suggested that the light shining through these patches attracts flying insects further into the pitcher and away from the pitcher's mouth in a similar manner to "Darlingtonia californica" and two "Nepenthes" species, "N. aristolochioides" and "N. klossii".The pitcher is filled with water and enzymes produced by the plant and helpful in the digestion of prey.