Which preposition to use with florets

of Occurrences 2%

And here float little emissaries from the dominions of land; for the fallen florets of the Viburnum drift among the lily-pads, with mast-like stamens erect, sprinkling the water with a strange beauty, and cheating us with the promise of a new aquatic flower.

in Occurrences 1%

By the elongation of the florets in the centre.

Which preposition to use with  florets