60.2 MB (60.0 MB compressed)
5616 x 3744 pixels
47.5 x 31.8 cm ⏐ 18.7 x 12.5 in (300dpi)
GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Ammophila arenaria leaf. Light micrograph of a section through a marram grass (Ammophila arenaria) leaf in fluorescence light, showing the characteristics that help reduce water loss. The outer epidermis consists of a layer of thick cuticle and layers of thick walled sclerenchyma (green), while the inner epidermis is folded and hairy to trap water vapour. Chloroplasts (dark-red), phloem (blue) and xylem vessels (green) can also be seen. Microscopic contrast technique : Incident fluorescence with ultraviolet excitation. Magnification: 180x when printed 10 centimetres wide.
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