|Disc: In composite
species, the central portion of the flower head (capitulum) containing
disc florets. Usually circular in cross-section.
Floret: A small flower, especially with reference to one within a dense cluster, as in the composite species.
Disc Floret: In composite species, a small rayless flower located in the disc portion of the capitulum or head.
Shown below: Ionactis linariifolius.