Pumpkin flower doesn't belong to complete flower, it doesn't belong to bisexual flower, it's a kind of unisexual flower. A complete flower has calyx, corolla, stamen and pistil. If some of the above parts are missing, it is not complete. But pumpkin flower is a kind of distinguishing female flower and male flower. There are pistils in female flower, but there are no pistils in male flower, so it is not a complete flower.
