Peace lily (Spathiphyllum) pollen by SEM. This is a genus of approximately 40 species of decorative monocotyledonous flowering plants from the tropical regions of the Americas and southeastern Asia. Some species are known as spath or peace lilies. The flowers are produced in a spadix, surrounded by a long, white, yellowing, or greenish spathe. The plants are poisonous. Enhanced SEM. Image width: 91.4 micrometers. Magnification: 1094x if the images is printed 10 cm wide.