Perfect flower refers to:
Perfect flower also termed hermaphroditic or bisexual contains both functional androecium with stamens producing pollen and gynoecium with carpels producing ovules within same receptacle irrespective of presence or absence of perianth whorls sepals and petals. Such flowers possess both male and female reproductive organs capable of self-pollination or outcrossing regulated by dichogamy, herkogamy, and self-incompatibility systems distinguishing sporophytic versus gametophytic control. Perfect condition distinguishes from imperfect unisexual flowers in monoecious or dioecious species where separate staminate and carpellate flowers evolve to increase outcrossing rates and genetic diversity.
Ref: Mauseth, Botany: perfect flower contains both male androecium and female gynoecium within same flower.