Figure 4
A schematic drawing of the measurement for reflection spectrum (a). Comparison of the reflection spectra in petals before (b,d,f) and after the SEM observations (c,e,g). The petals untreated (b,c), treated with ethanol (d,e) and chloroform (f,g). Corresponding LM images are shown in each box. Scale bars, 0.1 mm.
