DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Buddleia leaf. Light micrograph of the underside of a butterfly bush (Buddleia sp.) leaf, showing the 'felt' of tiny hairs (trichomes, white) that cover it. These trichomes help to defend the leaf from insects and also slow down water loss through transpiration. Magnification: x7, when printed 10 centimetres wide.
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