DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Horsetail (Equisetum telmateia) bud. Light micrograph of a section through a developing branch bud from a great horsetail plant, showing the central stem surrounded by a whorl of 14 developing branches fused with it. Also seen is ring of vascular bundles (brown) and the central pith full of parenchyma cells (light-brown). Magnification: x5 when printed 10 centimetres wide.
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