The researchers studied how the flowers of Handeliodendron bodinieri, a plant found only in China, develop. They used microscopes to look closely at the process. They found that the flowers start with two different-sized buds, with petals and stamens growing separately. The male flowers have normal stamens but no ovary, while the female flowers have a bulging ovary and degenerated stamens. This plant has unisexual flowers, meaning each flower is either male or female. The way the flowers develop can help us understand how this plant is related to others in its family.