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. 2017 Feb 22;14(127):20160933. doi: 10.1098/rsif.2016.0933

Figure 6.

Figure 6.

Increased light reflection by buttercup petals under large angles. (a) The thin-film reflectance of the petal's epidermis for unpolarized light calculated for a few angles of incidence. The angles of illumination and reflection (θi and θr) were identical. (b) A meadow with many flowering R. acris plants. The flowers have an approximately paraboloid shape and are collectively facing the sun. Inset: simplified visualization of light reflection by the petals of an R. acris flower to the reproductive organs. Light reflected from the distal and central parts of the petal is reflected towards the reproductive organs.