disk flower


noun Botany.

one of a number of small tubular flowers composing the disk of certain composite plants.
Also called disk floret.
Compare ray flower.

Origin of disk flower

First recorded in 1865–70

Scientific definitions for disk flower

disk flower

Any of the tiny tubular flowers in the central portion of the capitulum or flower head of certain plants of the composite family (Asteraceae or Compositae). In many composite flowers, such as the daisy and sunflower, the disk flowers are surrounded by flattened ray flowers.