Cosexual angiosperms with either monoecious or hermaphroditic flowers do not have sex chromosomes. The plants are hermaphroditic or, rarely, dioecious. Some Hindu origin myths feature androgynous or hermaphroditic ancestors. Hermaphroditic gastropod snails mate using love darts. Sexual dimorphism also occurs in hermaphroditic fish. Some hermaphroditic land snails begin mating with an elaborate tactile courting ritual. The species originated as a hybrid between two species and is diploid but not hermaphroditic. Its flowers are hermaphroditic, pollinated by bees. The flower is hermaphroditic and pollinated by bees. Androgynous and hermaphroditic men were heavily involved in the cult of Inanna-Ishtar. The flowers are perfect (hermaphroditic) and insect-pollinated, with fivefold symmetry. In ancient Sumer, androgynous and hermaphroditic men were heavily involved in the cult of Inanna. Most polychaetes have separate sexes, rather than being hermaphroditic. All pycnogonid species have separate sexes, except for one species that is hermaphroditic. In some disciplines, such as botany, "androgynous" and "hermaphroditic" are still used interchangeably.