Flower structure is more uniformly distributed within the monocots. Monocot flowers occur with parts having multiples of three; usually there are three stamen, three petals and three sepals (six tepals), and usually just one stigma. However stamens in twos can be found in Cypripedioideae while single fertile stamens can be found in Philydraceae, Zingiberaceae, and as gynostemium in Orchidacaea. Furthermore, flower structures that evolved to trap insects to accomplish pollination are found in many monocot genera. In relation to flower arrangement alone, plants with perfect flowers should be most likely to self-pollinate while dioecious plants should be most likely to cross-pollinate.
