Image: Buttercup petal structural and pigment coloration

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Description: Buttercup petals acquire their brilliant yellow gloss from a combination, rare among plants, of yellow pigment and structural coloration. The very smooth upper epidermis acts as a reflective and iridescent thin film. The unusual starch cells form a diffuse but strong reflector, enhancing the flower's brilliance.
Title: Buttercup petal structural and pigment coloration
Credit: Own work
Author: Chiswick Chap. Based on van der Kooi, C.J.; Elzenga, J.T.M.; Dijksterhuis, J.; Stavenga, D.G. (2017). "Functional optics of glossy buttercup flowers". Journal of the Royal Society Interface. 14: 20160933. doi:10.1098/rsif.2016.0933
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes

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Structural coloration

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