Terms Defining Flower Parts

A flower having sepals, petals, stamens, and pistils is complete; lacking one or more of such structures, it is said to be incomplete. Stamens and pistils are not present together in all flowers.

When both are present the flower is said to be perfect, or bisexual, regardless of a lack of any other part that renders it incomplete.

Terms Referring to Flowers

  • Complete – Flower containing sepals, petals, stamens, and pistil
  • Incomplete – Flower lacking sepals, petals, stamens, and/or pistils
  • Perfect – Flowers containing male and female parts
  • Imperfect – Flowers that lack either male or female parts
  • Pistillate – Flowers containing only female parts
  • Staminate – Flowers containing only male parts
Terms Defining Flower Parts
Photo via biologicalexceptions.blogspot.com

Terms Referring to Plants

  • Hermaphroditic – Plants with perfect flowers (apples, tulips)
  • Monoecious – Plants with separate male flowers and female flowers on the same plant (corn, squash, and pine)
  • Dioecious – Plants with male flowers and female flowers on separate plants (maple, holly, and salt brush)
  • Gynoecious – Plants with only female flowers
  • Andromonoecious – Plants with only male flowers

Source: ext.colostate.edu


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