Monoecious

A plant that has male and female flowers on the same plant. The flowers may be either bisexual (as in grasses) where an inflorescence has spikelets containing both male and female organs, either in the same or separate florets. However, some can be unisexual with separate male and female inflorescences (e.g. Maize, Zea mays). The majority of plants are monoecious and other examples include: Silver Birch (Betula pendula), Beech (Fagus sylvatica) and Oaks (Quercus sp.).