Floral scent
A floral scent, floral bouquet, or pollen aroma was a scent specifically associated with flowers.
In 2268, Spock attributed pollen aroma to the honey scent James T. Kirk smelled on Argus X to it being the hemisphere's growing season. (TOS: "Obsession")
During the USS Enterprise's visit to Angel I in 2364, Lieutenant Commander Data first encountered perfume, a substance he described as "an alcohol-based synthetic, artificially reproducing a floral scent." (TNG: "Angel One")
One of the fragrances offered by Retaya in 2371 was described as having a floral bouquet. (DS9: "Improbable Cause")