STEFAN DILLER / SCIENCE PHOTO LIBRARY STEFAN DILLER / SCIENCE PHOTO LIBRARY
Liquorice (Glycyrrhiza glabra) leaf, coloured scanning electron micrograph (SEM). The root of this plant is used as a tobacco and sweet flavouring. The rounded and spiky objects on the leaf surface are types of trichomes, specialised structures that can be glandular in nature, or help defend against predators.
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