Table 2 Mean contact angle (\(\theta _{c}\)) and type of cells present on the adaxial and abaxial surfaces of the six species used in this study.

From: Iridescence and hydrophobicity have no clear delineation that explains flower petal micro-surface

  1. Mean contact angle values were obtained from three independent measurements recorded on three different regions: tip middle and bottom from petals of two different flowers. Measured \(\theta _{c}\) values ranged from wettable (\(\theta _{c}< 110^{\circ }\)) to highly non-wettable surfaces (\(130^{\circ }<\theta _{c}< 150^{\circ }\)). Values in parentheses represent the sample circular standard deviation. \(^\dagger\) Cell types follow the nomenclature by Koch et al. [2]. Colour codes in table represent the different surface wettability categories defined by Taneda et al. [9]: highly wettable (yellow), wettable (green), non-wettable (orange) and highly non-wettable (pink).
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