Zamia roezlii
Zamia roezlii is a species of cycad, a plant in the family Zamiaceae. It is found in Colombia and the Pacific coast of Ecuador. It is named for the Czech botanist Benedikt Roezl. A single sperm cell from Zamia roezlii is about 0.4mm in length and is visible to the unaided eye, being the world's largest plant sperm cell. Drosophila bifurca, a species of fruit fly, has sperm that are 5.8cm long, albeit mostly coiled tail.
