pitcher plant is a kind of dioecious plant. Pollination depends on two plants with different genders. In general, if the male plants account for 70% in the wild, the rest are females. It is usually pollinated by the wind, but the calyx of the floret will have nectar secreted, which will attract some insects to pollinate.
In order to distinguish the male and female of pitcher plant, we usually distinguish them by the pistil.
1. Female flower: the female flower of pitcher plant has only one pistil, and the stigma is green, and it also has certain viscosity, which is the way to stick the pollen. Its calyx is very small, and its pistil is black and oval. After its capsule grows and matures, it will crack, showing 4 petals, and there are many seeds in it.
2. Male flower: the male flower of pitcher plant also has a stamen, and its anther will have yellow pollen. It has four sepals, the shape is oval, oblong, the length is about 5-7cm.