Floating fern leaf papilla, SEM

Floating fern leaf papilla, SEM

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Credit: EYE OF SCIENCE/SCIENCE PHOTO LIBRARY

Caption: Floating fern leaf papilla. Coloured scanning electron micrograph (SEM) of a papilla on the upper surface of a floating fern (Salvinia natans) leaf. The surface is covered in these papillae, which function to trap air next to the leaf. The papillae are hydrophobic (water-repelling), apart from at the tips, where they are hydrophilic (water-attracting). Magnification: x600 when printed at 10 centimetres wide.

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Keywords: air layer, aquatic, biological, biology, botanical, botany, coloured, false-coloured, floating fern, flora, hydrophilic, hydrophobic, leaf, nature, no-one, nobody, papilla, papillae, plant, salvinia natans, scanning electron micrograph, scanning electron microscope, sem, surface, trichomes, upper surface

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