Doubled flowered / double bloom is a term that refers to flowers that were selected for excessive petals! Almost any flowering plant of ornamental value probably has a double flowered variety
(Double bloom is sometimes used to refer to a plant blooming twice tho so be mindful!)
I wonder if botanically, the āpetalsā of these flowers arenāt actually petals and the real flowers are the small things in the center (this is more common than youād think)
Anyway, Akechi yellow flower
They were taken with a camera used for gel imaging in the lab. Hereās the program on da computer. You can even see a bit of the gel behind him. (He was not exposed to the UV light actually needed to take the gel image)